A014431 - cp's OEIS frontend

A014431 a(1) = 1, a(2) = 2, a(n) = a(1)a(n-1) + a(2)a(n-2) + ...+ a(n-2)*a(2) for n >= 3.

n	a(n)
1	1
2	2
3	2
4	6
5	14
6	42
7	122
8	382
9	1206
10	3922
11	12914
12	43190
13	145950
14	498170
15	1714026
16	5940014
17	20712646
18	72623266
19	255875298
20	905477734
21	3216853294
22	11469069258
23	41023019098
24	147166210014
25	529374272470
26	1908965352434
27	6899707805522
28	24991194656022
29	90698707816766

[1, 2, 2, 6, 14, 42, 122, 382, 1206, 3922, 12914, 43190, 145950, 498170, 1714026, 5940014, 20712646, 72623266, 255875298, 905477734, 3216853294, 11469069258, 41023019098, 147166210014, 529374272470, 1908965352434, 6899707805522, 24991194656022, 90698707816766]

cp's OEIS Frontend

A014431 a(1) = 1, a(2) = 2, a(n) = a(1)a(n-1) + a(2)a(n-2) + ...+ a(n-2)*a(2) for n >= 3.

Table of values

List of values

cp's OEIS Frontend

A014431 a(1) = 1, a(2) = 2, a(n) = a(1)*a(n-1) + a(2)*a(n-2) + ...+ a(n-2)*a(2) for n >= 3.

Table of values

List of values

A014431 a(1) = 1, a(2) = 2, a(n) = a(1)a(n-1) + a(2)a(n-2) + ...+ a(n-2)*a(2) for n >= 3.