A007585 - cp's OEIS frontend

A007585 10-gonal (or decagonal) pyramidal numbers: a(n) = n(n + 1)(8*n - 5)/6.

n	a(n)
0	0
1	1
2	11
3	38
4	90
5	175
6	301
7	476
8	708
9	1005
10	1375
11	1826
12	2366
13	3003
14	3745
15	4600
16	5576
17	6681
18	7923
19	9310
20	10850
21	12551
22	14421
23	16468
24	18700
25	21125
26	23751
27	26586
28	29638
29	32915
30	36425
31	40176
32	44176
33	48433
34	52955
35	57750

[0, 1, 11, 38, 90, 175, 301, 476, 708, 1005, 1375, 1826, 2366, 3003, 3745, 4600, 5576, 6681, 7923, 9310, 10850, 12551, 14421, 16468, 18700, 21125, 23751, 26586, 29638, 32915, 36425, 40176, 44176, 48433, 52955, 57750]

cp's OEIS Frontend

A007585 10-gonal (or decagonal) pyramidal numbers: a(n) = n(n + 1)(8*n - 5)/6.

Table of values

List of values

cp's OEIS Frontend

A007585 10-gonal (or decagonal) pyramidal numbers: a(n) = n*(n + 1)*(8*n - 5)/6.

Table of values

List of values

A007585 10-gonal (or decagonal) pyramidal numbers: a(n) = n(n + 1)(8*n - 5)/6.