Signed triangle of D'Arcais numbers (A008298) : coefficients of r in the polynomials generated by the series coefficients of z^n in Product[(1-z^k)^r, {k,1,Inf}]*(n!).
1, 0, 1, 0, 3, 1, 0, 8, 9, 1, 0, 42, 59, 18, 1, 0, 144, 450, 215, 30, 1, 0, 1440
2 seqfan posts
Mon Sep 5 13:36:41 CEST 2011 [seqfan] Re: DHARMA: the difference between A078521 and A137432