A006054 - cp's OEIS frontend

A006054 a(n) = 2*a(n-1) + a(n-2) - a(n-3), with a(0) = a(1) = 0, a(2) = 1.

n	a(n)
0	0
1	0
2	1
3	2
4	5
5	11
6	25
7	56
8	126
9	283
10	636
11	1429
12	3211
13	7215
14	16212
15	36428
16	81853
17	183922
18	413269
19	928607
20	2086561
21	4688460
22	10534874
23	23671647
24	53189708
25	119516189
26	268550439
27	603427359
28	1355888968
29	3046654856
30	6845771321
31	15382308530
32	34563733525

[0, 0, 1, 2, 5, 11, 25, 56, 126, 283, 636, 1429, 3211, 7215, 16212, 36428, 81853, 183922, 413269, 928607, 2086561, 4688460, 10534874, 23671647, 53189708, 119516189, 268550439, 603427359, 1355888968, 3046654856, 6845771321, 15382308530, 34563733525]

cp's OEIS Frontend

A006054 a(n) = 2*a(n-1) + a(n-2) - a(n-3), with a(0) = a(1) = 0, a(2) = 1.

Table of values

List of values