A355276 - OEIS

%I #13 Sep 11 2022 00:28:08

%S 2,2,1,4,4,6,3,8,9,12,11,18,33,37,40,43,64,77,71,118,135,167,241

%N Number of n-digit terms in A347475.

%Y Cf. A000217 (triangular numbers), A014261 (numbers with only odd digits), A117960 (triangular numbers with only odd digits), A349243 (indices of the former), A347475 (such indices with only odd digits), A349247 (least such k-digit term), A355277 (largest such k-digit term).

%K nonn,base,more

%O 1,1

%A _M. F. Hasler_, Sep 08 2022

%E a(20)-a(23) from _Michael S. Branicky_, Sep 09 2022