A194588 - cp's OEIS frontend

A194588 a(n) = A189912(n-1)-a(n-1) for n>0, a(0) = 1; extended Riordan numbers.

n	a(n)
0	1
1	0
2	2
3	2
4	8
5	17
6	49
7	128
8	356
9	983
10	2759
11	7779
12	22087
13	63000
14	180478
15	518846
16	1496236
17	4326383
18	12539335
19	36419069
20	105971473
21	308866226
22	901573732
23	2635235789
24	7712078755
25	22594899002
26	66266698424
27	194531585078
28	571561286576
29	1680679630089
30	4945738222801

[1, 0, 2, 2, 8, 17, 49, 128, 356, 983, 2759, 7779, 22087, 63000, 180478, 518846, 1496236, 4326383, 12539335, 36419069, 105971473, 308866226, 901573732, 2635235789, 7712078755, 22594899002, 66266698424, 194531585078, 571561286576, 1680679630089, 4945738222801]

cp's OEIS Frontend

A194588 a(n) = A189912(n-1)-a(n-1) for n>0, a(0) = 1; extended Riordan numbers.

Table of values

List of values