cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A218324 Odd heptagonal pyramidal numbers.

Table of values

n a(n)
1 1
2 115
3 645
4 1911
5 4233
6 7931
7 13325
8 20735
9 30481
10 42883
11 58261
12 76935
13 99225
14 125451
15 155933
16 190991
17 230945
18 276115
19 326821
20 383383
21 446121
22 515355
23 591405
24 674591
25 765233
26 863651
27 970165
28 1085095
29 1208761
30 1341483
31 1483581
32 1635375
33 1797185
34 1969331

List of values

[1, 115, 645, 1911, 4233, 7931, 13325, 20735, 30481, 42883, 58261, 76935, 99225, 125451, 155933, 190991, 230945, 276115, 326821, 383383, 446121, 515355, 591405, 674591, 765233, 863651, 970165, 1085095, 1208761, 1341483, 1483581, 1635375, 1797185, 1969331]