Triangle of coefficients for polynomials used for the column g.f.s of triangle A116880, called CM(1,2).

A117505

Triangle of coefficients for polynomials used for the column g.f.s of triangle A116880, called CM(1,2).

Terms

    a(0) =1a(1) =2a(2) =1a(3) =2a(4) =4a(5) =3a(6) =2a(7) =4a(8) =16a(9) =13a(10) =2a(11) =4a(12) =16a(13) =80a(14) =67a(15) =2a(16) =4a(17) =16a(18) =80a(19) =448a(20) =381a(21) =2a(22) =4a(23) =16a(24) =80a(25) =448a(26) =2688a(27) =2307a(28) =2a(29) =4

External references