Odd numbers found when writing first denominator and then numerator of each element of the 1/3-Pascal triangle (by row).
1, 1, 1, 1, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 3, 3, 1, 1, 1, 1, 3, 7, 3, 3, 7, 1, 1, 1, 1, 3, 1, 5, 1, 5
1 seqfan posts
Thu Feb 5 22:44:07 CET 2009 [seqfan] A061653 corrected!