A256645 - cp's OEIS frontend

A256645 25-gonal pyramidal numbers: a(n) = n(n+1)(23*n-20)/6.

n	a(n)
0	0
1	1
2	26
3	98
4	240
5	475
6	826
7	1316
8	1968
9	2805
10	3850
11	5126
12	6656
13	8463
14	10570
15	13000
16	15776
17	18921
18	22458
19	26410
20	30800
21	35651
22	40986
23	46828
24	53200
25	60125
26	67626
27	75726
28	84448
29	93815
30	103850
31	114576
32	126016
33	138193
34	151130
35	164850
36	179376
37	194731
38	210938
39	228020

[0, 1, 26, 98, 240, 475, 826, 1316, 1968, 2805, 3850, 5126, 6656, 8463, 10570, 13000, 15776, 18921, 22458, 26410, 30800, 35651, 40986, 46828, 53200, 60125, 67626, 75726, 84448, 93815, 103850, 114576, 126016, 138193, 151130, 164850, 179376, 194731, 210938, 228020]

cp's OEIS Frontend

A256645 25-gonal pyramidal numbers: a(n) = n(n+1)(23*n-20)/6.

Table of values

List of values

cp's OEIS Frontend

A256645 25-gonal pyramidal numbers: a(n) = n*(n+1)*(23*n-20)/6.

Table of values

List of values

A256645 25-gonal pyramidal numbers: a(n) = n(n+1)(23*n-20)/6.