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Good sequence (Posted on 2021-07-26)

1, 2, 4, 8, 16, 23, 28, 38, 49, ?, ...

No Solution Yet Submitted by Math Man

Rating: 3.5000 (2 votes)

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Puzzle Solution

Comment 4 of 4 |

Let d(n) be the sum of digits of n.

Let s(n) = nth term of the sequence.

Then, s(n+1) = s(n) +d(n)

For example:

S(6) = s(5)+d(5)= 16+7 =23

Consequently,

s(10)= s(9)+d(9) = 49+13 =62

Posted by K Sengupta on 2022-12-06 22:25:44

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