[seqfan] A226916 Number of (17, 11)-reverse multiples with n digits.

John Mason masonmilan33 at gmail.com
Mon Dec 12 17:56:11 CET 2022


Dear Sequence Fans,
1. Apparently, from term 7 onwards, this sequence takes its odd terms from
A000930 and its even terms from A097333. I have no idea how to prove this.
2. Also, a(n+7) gives the number of inequivalent compositions of n as a sum
of 1's and 3's. And I've no idea how to prove this either.
john



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