A291016 - cp's OEIS frontend

A291016 p-INVERT of (1,1,1,1,1,...), where p(S) = 1 - 4*S + S^2.

n	a(n)
0	4
1	19
2	90
3	426
4	2016
5	9540
6	45144
7	213624
8	1010880
9	4783536
10	22635936
11	107114400
12	506870784
13	2398538304
14	11350005120
15	53708800896
16	254152774656
17	1202663842560
18	5691066407424
19	26930415389184
20	127436093890560
21	603034071008256
22	2853587862706176

[4, 19, 90, 426, 2016, 9540, 45144, 213624, 1010880, 4783536, 22635936, 107114400, 506870784, 2398538304, 11350005120, 53708800896, 254152774656, 1202663842560, 5691066407424, 26930415389184, 127436093890560, 603034071008256, 2853587862706176]

cp's OEIS Frontend

A291016 p-INVERT of (1,1,1,1,1,...), where p(S) = 1 - 4*S + S^2.

Table of values

List of values