A087957 - cp's OEIS frontend

A087957 a(n) is the square of the n-th partial sum minus the n-th partial sum of the squares, divided by a(n-1), for all n>=1, starting with a(0)=1, a(1)=4.

n	a(n)
0	1
1	4
2	2
3	14
4	16
5	56
6	90
7	242
8	456
9	1092
10	2218
11	5038
12	10600
13	23496
14	50258
15	110146
16	237424
17	517604
18	1119730
19	2435118
20	5276704
21	11462328
22	24857322
23	53967602
24	117077240
25	254122724
26	551386842
27	1196677774
28	2596715576
29	5635362056

[1, 4, 2, 14, 16, 56, 90, 242, 456, 1092, 2218, 5038, 10600, 23496, 50258, 110146, 237424, 517604, 1119730, 2435118, 5276704, 11462328, 24857322, 53967602, 117077240, 254122724, 551386842, 1196677774, 2596715576, 5635362056]

cp's OEIS Frontend

A087957 a(n) is the square of the n-th partial sum minus the n-th partial sum of the squares, divided by a(n-1), for all n>=1, starting with a(0)=1, a(1)=4.

Table of values

List of values