G.f. A(x) satisfies: Sum_{n>=0} x^n * A(x)^(n*(n+1)/2) = Sum_{n>=0} x^n / [Product_{k=1..n} 1 - k*x].
A325452
G.f. A(x) satisfies: Sum_{n>=0} x^n * A(x)^(n*(n+1)/2) = Sum_{n>=0} x^n / [Product_{k=1..n} 1 - k*x].
Terms
- a(0) =1a(1) =1a(2) =1a(3) =2a(4) =7a(5) =31a(6) =157a(7) =873a(8) =5213a(9) =32994a(10) =219529a(11) =1527181a(12) =11066057a(13) =83297249a(14) =650046972a(15) =5251478949a(16) =43865544600a(17) =378477776926
External references
- oeis: A325452