A291238 - cp's OEIS frontend

A291238 p-INVERT of (0,1,0,1,0,1,...), where p(S) = (1 - S)^2 (1 - 2 S).

n	a(n)
0	4
1	11
2	30
3	79
4	202
5	508
6	1262
7	3109
8	7614
9	18569
10	45152
11	109560
12	265448
13	642463
14	1553790
15	3755843
16	9075302
17	21923060
18	52949458
19	127869209
20	308767326
21	745537309
22	1800065788
23	4346043888
24	10492781068
25	25332654899
26	61159842270
27	147655261111
28	356475233986

[4, 11, 30, 79, 202, 508, 1262, 3109, 7614, 18569, 45152, 109560, 265448, 642463, 1553790, 3755843, 9075302, 21923060, 52949458, 127869209, 308767326, 745537309, 1800065788, 4346043888, 10492781068, 25332654899, 61159842270, 147655261111, 356475233986]

cp's OEIS Frontend

A291238 p-INVERT of (0,1,0,1,0,1,...), where p(S) = (1 - S)^2 (1 - 2 S).

Table of values

List of values