A283329 - cp's OEIS frontend

A283329 a(n) = (1 + Sum_{j=1..K-1} a(n-j) + a(n-1)*a(n-K+1))/a(n-K) with a(1),...,a(K)=1, where K=4.

n	a(n)
1	1
2	1
3	1
4	1
5	5
6	13
7	33
8	217
9	617
10	1633
11	10813
12	30805
13	81601
14	540401
15	1539601
16	4078401
17	27009205
18	76949213
19	203838433
20	1349919817
21	3845921017
22	10187843233
23	67468981613
24	192219101605
25	509188323201
26	3372099160801
27	9607109159201
28	25449228316801
29	168537489058405

[1, 1, 1, 1, 5, 13, 33, 217, 617, 1633, 10813, 30805, 81601, 540401, 1539601, 4078401, 27009205, 76949213, 203838433, 1349919817, 3845921017, 10187843233, 67468981613, 192219101605, 509188323201, 3372099160801, 9607109159201, 25449228316801, 168537489058405]

cp's OEIS Frontend

A283329 a(n) = (1 + Sum_{j=1..K-1} a(n-j) + a(n-1)*a(n-K+1))/a(n-K) with a(1),...,a(K)=1, where K=4.

Table of values

List of values