A098586 - cp's OEIS frontend

A098586 a(n) = (1/2) * (5*P(n+1) + P(n) - 1), where P(k) are the Pell numbers A000129.

n	a(n)
0	2
1	5
2	13
3	32
4	78
5	189
6	457
7	1104
8	2666
9	6437
10	15541
11	37520
12	90582
13	218685
14	527953
15	1274592
16	3077138
17	7428869
18	17934877
19	43298624
20	104532126
21	252362877
22	609257881
23	1470878640
24	3551015162
25	8572908965
26	20696833093
27	49966575152
28	120629983398
29	291226541949

[2, 5, 13, 32, 78, 189, 457, 1104, 2666, 6437, 15541, 37520, 90582, 218685, 527953, 1274592, 3077138, 7428869, 17934877, 43298624, 104532126, 252362877, 609257881, 1470878640, 3551015162, 8572908965, 20696833093, 49966575152, 120629983398, 291226541949]

cp's OEIS Frontend

A098586 a(n) = (1/2) * (5*P(n+1) + P(n) - 1), where P(k) are the Pell numbers A000129.

Table of values

List of values