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.

A153785 5 times heptagonal numbers: a(n) = 5*n*(5*n-3)/2.

Table of values

n a(n)
0 0
1 5
2 35
3 90
4 170
5 275
6 405
7 560
8 740
9 945
10 1175
11 1430
12 1710
13 2015
14 2345
15 2700
16 3080
17 3485
18 3915
19 4370
20 4850
21 5355
22 5885
23 6440
24 7020
25 7625
26 8255
27 8910
28 9590
29 10295
30 11025
31 11780
32 12560
33 13365
34 14195
35 15050
36 15930
37 16835
38 17765

List of values

[0, 5, 35, 90, 170, 275, 405, 560, 740, 945, 1175, 1430, 1710, 2015, 2345, 2700, 3080, 3485, 3915, 4370, 4850, 5355, 5885, 6440, 7020, 7625, 8255, 8910, 9590, 10295, 11025, 11780, 12560, 13365, 14195, 15050, 15930, 16835, 17765]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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