G.f. A(x,y) satisfies: x*y*A(x,y) = Sum_{n=-oo..+oo} (-1)^n * x^(n*(n+1)/2) * A(x,y)^n, with coefficients T(n,k) of x^n*y^k in A(x,y) given as a triangle read by rows.
A355360
G.f. A(x,y) satisfies: x*y*A(x,y) = Sum_{n=-oo..+oo} (-1)^n * x^(n*(n+1)/2) * A(x,y)^n, with coefficients T(n,k) of x^n*y^k in A(x,y) given as a triangle read by rows.
Terms
- a(0) =1a(1) =0a(2) =1a(3) =0a(4) =3a(5) =2a(6) =0a(7) =9a(8) =12a(9) =5a(10) =0a(11) =22a(12) =54a(13) =46a(14) =14a(15) =0a(16) =51a(17) =196a(18) =282a(19) =175a(20) =42a(21) =0a(22) =108a(23) =630a(24) =1360a(25) =1365a(26) =666a(27) =132a(28) =0a(29) =221
External references
- oeis: A355360