A291416 - cp's OEIS frontend

A291416 p-INVERT of (1,1,0,0,0,0,...), where p(S) = 1 - 4 S + S^2.

n	a(n)
0	4
1	19
2	86
3	392
4	1784
5	8121
6	36966
7	168267
8	765940
9	3486508
10	15870352
11	72240785
12	328835240
13	1496836103
14	6813498210
15	31014589884
16	141176346720
17	642625324009
18	2925187658218
19	13315259321575
20	60610173266216
21	275893470389144
22	1255848695053856
23	5716539585528849

[4, 19, 86, 392, 1784, 8121, 36966, 168267, 765940, 3486508, 15870352, 72240785, 328835240, 1496836103, 6813498210, 31014589884, 141176346720, 642625324009, 2925187658218, 13315259321575, 60610173266216, 275893470389144, 1255848695053856, 5716539585528849]

cp's OEIS Frontend

A291416 p-INVERT of (1,1,0,0,0,0,...), where p(S) = 1 - 4 S + S^2.

Table of values

List of values