A025244 - cp's OEIS frontend

A025244 a(n) = a(1)a(n-1) + a(2)a(n-2) + ... + a(n-3)*a(3) for n >= 4, with initial terms 1, 1, 2, 2.

n	a(n)
1	1
2	1
3	2
4	2
5	4
6	10
7	22
8	52
9	130
10	326
11	832
12	2162
13	5674
14	15032
15	40178
16	108154
17	292956
18	797994
19	2184430
20	6006028
21	16579138
22	45929838
23	127656504
24	355863330
25	994735442
26	2787537904
27	7829586914
28	22038759218
29	62158281844
30	175636481738
31	497142172806
32	1409444977380

[1, 1, 2, 2, 4, 10, 22, 52, 130, 326, 832, 2162, 5674, 15032, 40178, 108154, 292956, 797994, 2184430, 6006028, 16579138, 45929838, 127656504, 355863330, 994735442, 2787537904, 7829586914, 22038759218, 62158281844, 175636481738, 497142172806, 1409444977380]

cp's OEIS Frontend

A025244 a(n) = a(1)a(n-1) + a(2)a(n-2) + ... + a(n-3)*a(3) for n >= 4, with initial terms 1, 1, 2, 2.

Table of values

List of values

cp's OEIS Frontend

A025244 a(n) = a(1)*a(n-1) + a(2)*a(n-2) + ... + a(n-3)*a(3) for n >= 4, with initial terms 1, 1, 2, 2.

Table of values

List of values

A025244 a(n) = a(1)a(n-1) + a(2)a(n-2) + ... + a(n-3)*a(3) for n >= 4, with initial terms 1, 1, 2, 2.