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.

A062741 3 times pentagonal numbers: 3*n*(3*n-1)/2.

Table of values

n a(n)
0 0
1 3
2 15
3 36
4 66
5 105
6 153
7 210
8 276
9 351
10 435
11 528
12 630
13 741
14 861
15 990
16 1128
17 1275
18 1431
19 1596
20 1770
21 1953
22 2145
23 2346
24 2556
25 2775
26 3003
27 3240
28 3486
29 3741
30 4005
31 4278
32 4560
33 4851
34 5151
35 5460
36 5778
37 6105
38 6441
39 6786
40 7140
41 7503
42 7875
43 8256
44 8646
45 9045

List of values

[0, 3, 15, 36, 66, 105, 153, 210, 276, 351, 435, 528, 630, 741, 861, 990, 1128, 1275, 1431, 1596, 1770, 1953, 2145, 2346, 2556, 2775, 3003, 3240, 3486, 3741, 4005, 4278, 4560, 4851, 5151, 5460, 5778, 6105, 6441, 6786, 7140, 7503, 7875, 8256, 8646, 9045]

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

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