An interleaving of the Genocchi numbers of the first and second kind, A110501 and A005439.

A099960

An interleaving of the Genocchi numbers of the first and second kind, A110501 and A005439.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =3a(6) =8a(7) =17a(8) =56a(9) =155a(10) =608a(11) =2073a(12) =9440a(13) =38227a(14) =198272a(15) =929569a(16) =5410688a(17) =28820619a(18) =186043904a(19) =1109652905a(20) =7867739648a(21) =51943281731a(22) =401293838336

External references