ANSWERS: 20

3263442?

The pattern appears to be the number times itself plus itself. so 1806 X 1806 + 1806 (didn't check if that's true for the 42, but...)

3263442 "a(n)=a(n1)^2+a(n1), a(0)=1." "1, 2, 6, 42, 1806, 3263442, 10650056950806, 113423713055421844361000442, 12864938683278671740537145998360961546653259485195806 " Source and further information: http://www.research.att.com/~njas/sequences/A007018

1806*1806+1806=3263442

The answer would be 3,263,442. The pattern appears to be the the previous number multiplied by a number one greater than itself: 1*2 = 2 2*3 = 6 6*7 = 42 42*43 = 1,806 and thus, 1806*1807 = 3,263,442

3263442

If a is the last number, next number is given by a(a+1). First number = 1 Second number= 1 * (1+1) = 2 Third number= 2 * (2+1) = 6 Fourth number= 6 * (6+1) = 42 Fifth number= 42*(42+1) = 1806 Sixth number= 1806*(1806+1)=3263442

3263442

3,263,442

No good at math but I like the fourth number lol.

3263442

3262974 And I'm an architect, it took me less than 3 minutes.

3263442,,,Architect...1 min.. each number is multiplied by the number+1 1x2=2...2x3=6...6x7=42...42x43=1806... 1806x1807= 3,263,442

designer is correct.

3,263,442 ... about 15 seconds ... computer programmer with a Ph.D. in math ...

AND THE WINNER IS!!!!!!! MY ARCHITECT FRIEND WITH THE ANSWER 3263442 BRILLIANT.....YOU JUST UNLOCKED A DOOR FOR ME IN A FAMILY GAME WE HAVE BEEN STUMPED ON FOR MONTHS. YOURS IS DEFINITELY THE CORRECT CODE.

the answer is actually 3263442.... 1806 squared plus 1806... works for all the previous numbers as well.. 1x1+1=2... 2x2+2=6... 6x6+6=42... 42x42+42=1806... took me 2 minutes and im none of the above occupations... haha im an art teacher

computer programmer with an ms degree in telco 1 min 1x2=2 2x3=6 6x7=42 42x43=1,806 1806x1807=3,263,442

3,263,442

3,263,442
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