1839075

Appears in sequences

• Expansion of g.f. A(x,y) satisfying y/x = Sum_{n=-oo..+oo} x^(n*(3*n+1)/2) * (A(x,y)^(3*n) - 1/A(x,y)^(3*n+1)), as a triangle read by rows.at n=40A361050
• Central terms of triangle A361050.at n=4A361538