Triangle read by rows, expansion of the e.g.f. given below related to partitions of {1,2,...,5n} into sets of size 5, nonzero coefficients of z.

A318257

Triangle read by rows, expansion of the e.g.f. given below related to partitions of {1,2,...,5n} into sets of size 5, nonzero coefficients of z.

Terms

    a(0) =1a(1) =0a(2) =1a(3) =0a(4) =1a(5) =126a(6) =0a(7) =1a(8) =3003a(9) =126126a(10) =0a(11) =1a(12) =107882a(13) =23279256a(14) =488864376a(15) =0a(16) =1a(17) =3321890a(18) =5319906900a(19) =412275623760a(21) =0a(22) =1a(23) =107746281

External references