A320950 - cp's OEIS frontend

A320950 G.f.: [ Sum_{n>=0} x^n * (1+x)^(n^2) ] * [ Sum_{n>=0} x^n / (1+x)^(n^2) ].

n	a(n)
0	1
1	2
2	3
3	5
4	20
5	81
6	272
7	1144
8	6147
9	30859
10	158137
11	955988
12	5995439
13	37307475
14	252176301
15	1813873656
16	13149151909
17	99412177075
18	793516947530
19	6470733413532
20	54217400538306
21	473499984230701
22	4245890615280401
23	38948094201082823
24	368815668052736968
25	3585473523132486254
26	35608100771085923165
27	362850695679003347638
28	3788143752503214124895

[1, 2, 3, 5, 20, 81, 272, 1144, 6147, 30859, 158137, 955988, 5995439, 37307475, 252176301, 1813873656, 13149151909, 99412177075, 793516947530, 6470733413532, 54217400538306, 473499984230701, 4245890615280401, 38948094201082823, 368815668052736968, 3585473523132486254, 35608100771085923165, 362850695679003347638, 3788143752503214124895]

cp's OEIS Frontend

A320950 G.f.: [ Sum_{n>=0} x^n * (1+x)^(n^2) ] * [ Sum_{n>=0} x^n / (1+x)^(n^2) ].

Table of values

List of values