a(n) = coefficient of x^n in A(x) such that x^2 = Sum_{n=-oo..+oo} x^(n*(3*n+1)/2) * (A(x)^(3*n) - 1/A(x)^(3*n+1)).
A359919
a(n) = coefficient of x^n in A(x) such that x^2 = Sum_{n=-oo..+oo} x^(n*(3*n+1)/2) * (A(x)^(3*n) - 1/A(x)^(3*n+1)).
Terms
- a(0) =1a(1) =0a(2) =1a(3) =5a(4) =19a(5) =65a(6) =211a(7) =681a(8) =2255a(9) =7830a(10) =28786a(11) =111230a(12) =443789a(13) =1795972a(14) =7284981a(15) =29466755a(16) =118834438a(17) =479034654a(18) =1936617163a(19) =7872885832a(20) =32226147305a(21) =132808096158a(22) =550444192577
External references
- oeis: A359919