G.f. A(x) satisfies: 2 = Sum_{n=-oo..+oo} (-x)^(n*(n+1)/2) * ((1+x)^(n+1) - 2*A(x))^n.
A355155
G.f. A(x) satisfies: 2 = Sum_{n=-oo..+oo} (-x)^(n*(n+1)/2) * ((1+x)^(n+1) - 2*A(x))^n.
Terms
- a(0) =1a(1) =1a(2) =7a(3) =28a(4) =184a(5) =1024a(6) =6676a(7) =42367a(8) =282765a(9) =1897203a(10) =13004369a(11) =89991470a(12) =630242521a(13) =4450613382a(14) =31683411117a(15) =227041605009
External references
- oeis: A355155