Expansion of g^2/(1 - x^2*g^2), where g = 1+x*g^4 is the g.f. of A002293.
A390147
Expansion of g^2/(1 - x^2*g^2), where g = 1+x*g^4 is the g.f. of A002293.
Terms
- a(0) =1a(1) =2a(2) =10a(3) =56a(4) =363a(5) =2540a(6) =18719a(7) =143084a(8) =1123888a(9) =9015938a(10) =73553356a(11) =608356076a(12) =5089508859a(13) =42992095102a(14) =366179399391
External references
- oeis: A390147