Stupid sequence #3

Level 2

Find the next number in the sequence 1 , 2 , 6 , 21 , 88 , ? 1, 2, 6, 21, 88, ?

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The answer is 445.

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1 solution

Félix Moreno
Sep 20, 2015

2 = ( 1 + 1 ) × 1 2 = (1+1) \times 1

6 = ( 2 + 1 ) × 2 6 = (2+1) \times 2

21 = ( 6 + 1 ) × 3 21 = (6+1) \times 3

88 = ( 21 + 1 ) × 4 88 = (21+1) \times 4

445 = ( 88 + 1 ) × 5 \boxed{445} = (88+1) \times 5

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