A195980 - cp's OEIS frontend

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}.

n	a(n)
0	1
1	1
2	2
3	4
4	9
5	21
6	52
7	133
8	351
9	948
10	2610
11	7298
12	20672
13	59192
14	171059
15	498275
16	1461437
17	4312300
18	12792342
19	38128354
20	114126797
21	342914278
22	1033914760
23	3127154610
24	9485523742
25	28848101993
26	87948036401
27	268724650863
28	822791384597
29	2524113596369
30	7757247543181
31	23880003051017
32	73627904162143
33	227347168628991
34	702970760225573
35	2176459051318522

[1, 1, 2, 4, 9, 21, 52, 133, 351, 948, 2610, 7298, 20672, 59192, 171059, 498275, 1461437, 4312300, 12792342, 38128354, 114126797, 342914278, 1033914760, 3127154610, 9485523742, 28848101993, 87948036401, 268724650863, 822791384597, 2524113596369, 7757247543181, 23880003051017, 73627904162143, 227347168628991, 702970760225573, 2176459051318522]

cp's OEIS Frontend

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}.

Table of values

List of values