Denominators of coefficients in asymptotic expansion of S_n (number of simple permutations, A111111).

A280781

Denominators of coefficients in asymptotic expansion of S_n (number of simple permutations, A111111).

Terms

    a(0) =1a(1) =1a(2) =1a(3) =3a(4) =3a(5) =15a(6) =45a(7) =315a(8) =63a(9) =2835a(10) =14175a(11) =22275a(12) =467775a(13) =1216215a(14) =42567525a(15) =638512875a(16) =638512875a(17) =834978375a(18) =558242685a(20) =713906510625

External references