Expansion of g^2/(1 - x^2*g^4), where g = 1+x*g^4 is the g.f. of A002293.
A391082
Expansion of g^2/(1 - x^2*g^4), where g = 1+x*g^4 is the g.f. of A002293.
Terms
- a(0) =1a(1) =2a(2) =10a(3) =58a(4) =380a(5) =2676a(6) =19791a(7) =151614a(8) =1192665a(9) =9577824a(10) =78198892a(11) =647171036a(12) =5416828315a(13) =45774745982a(14) =390004614958
External references
- oeis: A391082