A087955 - cp's OEIS frontend

A087955 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)=2.

n	a(n)
0	1
1	2
2	2
3	8
4	12
5	34
6	62
7	152
8	304
9	698
10	1458
11	3248
12	6924
13	15210
14	32734
15	71440
16	154432
17	336018
18	727874
19	1581496
20	3429100
21	7445714
22	16151518
23	35059560
24	76068400
25	165095562
26	358241202
27	777459488
28	1687087532
29	3661224794
30	7945027902

[1, 2, 2, 8, 12, 34, 62, 152, 304, 698, 1458, 3248, 6924, 15210, 32734, 71440, 154432, 336018, 727874, 1581496, 3429100, 7445714, 16151518, 35059560, 76068400, 165095562, 358241202, 777459488, 1687087532, 3661224794, 7945027902]

cp's OEIS Frontend

A087955 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)=2.

Table of values

List of values