A291415 - cp's OEIS frontend

A291415 p-INVERT of (1,1,0,0,0,0,...), where p(S) = 1 - 3 S + S^2.

n	a(n)
0	3
1	11
2	37
3	126
4	427
5	1448
6	4909
7	16643
8	56424
9	191292
10	648529
11	2198680
12	7454090
13	25271280
14	85676131
15	290464093
16	984747891
17	3338548317
18	11318536416
19	38372746007
20	130093466328
21	441050269849
22	1495273713773
23	5069362002354
24	17186439428582
25	58266444593059

[3, 11, 37, 126, 427, 1448, 4909, 16643, 56424, 191292, 648529, 2198680, 7454090, 25271280, 85676131, 290464093, 984747891, 3338548317, 11318536416, 38372746007, 130093466328, 441050269849, 1495273713773, 5069362002354, 17186439428582, 58266444593059]

cp's OEIS Frontend

A291415 p-INVERT of (1,1,0,0,0,0,...), where p(S) = 1 - 3 S + S^2.

Table of values

List of values