G.f. A(x,y) satisfies: -y = f(-x,-A(x,y)), where f(x,y) = Sum_{n=-oo..oo} x^(n*(n+1)/2) * y^(n*(n-1)/2) is Ramanujan's theta function.
A354650
G.f. A(x,y) satisfies: -y = f(-x,-A(x,y)), where f(x,y) = Sum_{n=-oo..oo} x^(n*(n+1)/2) * y^(n*(n-1)/2) is Ramanujan's theta function.
Terms
- a(0) =1a(1) =1a(2) =0a(3) =3a(4) =3a(5) =1a(6) =0a(7) =9a(8) =27a(9) =30a(10) =15a(11) =3a(12) =0a(13) =22a(14) =147a(15) =340a(16) =390a(17) =246a(18) =83a(19) =12a(20) =0a(21) =51a(22) =630a(23) =2530a(24) =5070a(25) =5928a(26) =4284a(27) =1908a(28) =486a(29) =55
External references
- oeis: A354650