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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.

A024215 Sum of squares of first n positive integers congruent to 1 mod 3.

Table of values

n a(n)
1 1
2 17
3 66
4 166
5 335
6 591
7 952
8 1436
9 2061
10 2845
11 3806
12 4962
13 6331
14 7931
15 9780
16 11896
17 14297
18 17001
19 20026
20 23390
21 27111
22 31207
23 35696
24 40596
25 45925
26 51701
27 57942
28 64666
29 71891
30 79635
31 87916
32 96752
33 106161
34 116161
35 126770
36 138006
37 149887
38 162431
39 175656
40 189580

List of values

[1, 17, 66, 166, 335, 591, 952, 1436, 2061, 2845, 3806, 4962, 6331, 7931, 9780, 11896, 14297, 17001, 20026, 23390, 27111, 31207, 35696, 40596, 45925, 51701, 57942, 64666, 71891, 79635, 87916, 96752, 106161, 116161, 126770, 138006, 149887, 162431, 175656, 189580]

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

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