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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.

A206806 Sum_{0-s(j), where s(j)=A002620(j) is the j-th quarter-square.

Table of values

n a(n)
2 1
3 4
4 13
5 30
6 62
7 112
8 190
9 300
10 455
11 660
12 931
13 1274
14 1708
15 2240
16 2892
17 3672
18 4605
19 5700
20 6985
21 8470
22 10186
23 12144
24 14378
25 16900
26 19747
27 22932
28 26495
29 30450
30 34840
31 39680
32 45016
33 50864
34 57273
35 64260
36 71877
37 80142
38 89110
39 98800
40 109270
41 120540
42 132671
43 145684

List of values

[1, 4, 13, 30, 62, 112, 190, 300, 455, 660, 931, 1274, 1708, 2240, 2892, 3672, 4605, 5700, 6985, 8470, 10186, 12144, 14378, 16900, 19747, 22932, 26495, 30450, 34840, 39680, 45016, 50864, 57273, 64260, 71877, 80142, 89110, 98800, 109270, 120540, 132671, 145684]

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

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