G.f. A(x) satisfies: Sum_{n>=0} x^n * A(x)^(n*(n-1)/2) = 1 / Sum_{n>=0} (-x)^n * A(x)^(n*(n+1)/2).
A337913
G.f. A(x) satisfies: Sum_{n>=0} x^n * A(x)^(n*(n-1)/2) = 1 / Sum_{n>=0} (-x)^n * A(x)^(n*(n+1)/2).
Terms
- a(0) =1a(1) =1a(2) =3a(3) =11a(4) =46a(5) =213a(6) =1064a(7) =5617a(8) =30903a(9) =175638a(10) =1025387a(11) =6124272a(12) =37306897a(13) =231245728a(14) =1455929352a(15) =9298583445a(16) =60183716399a(17) =394471770814
External references
- oeis: A337913