Coefficients of expansion of "leading root" xi_0(y) of the partial theta function Sum_{n=0..oo} x^n y^{n(n-1)/2}.

A195980

Coefficients of expansion of "leading root" xi_0(y) of the partial theta function Sum_{n=0..oo} x^n y^{n(n-1)/2}.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =4a(4) =9a(5) =21a(6) =52a(7) =133a(8) =351a(9) =948a(10) =2610a(11) =7298a(12) =20672a(13) =59192a(14) =171059a(15) =498275a(16) =1461437a(17) =4312300a(18) =12792342a(19) =38128354a(20) =114126797a(21) =342914278a(22) =1033914760a(23) =3127154610a(24) =9485523742a(25) =28848101993a(26) =87948036401a(27) =268724650863a(28) =822791384597

External references