G.f. A(x) satisfies: 1/(1-x) = Sum_{n>=0} x^n * ((1+x)^n - A(x))^n, where A(0) = 0.
A325575
G.f. A(x) satisfies: 1/(1-x) = Sum_{n>=0} x^n * ((1+x)^n - A(x))^n, where A(0) = 0.
Terms
- a(0) =1a(1) =2a(2) =5a(3) =15a(4) =59a(5) =262a(6) =1307a(7) =7074a(8) =41012a(9) =252187a(10) =1632799a(11) =11074271a(12) =78360644a(13) =576612899a(14) =4400858604a(15) =34762324434a(16) =283657506679
External references
- oeis: A325575