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.

A000075 Number of positive integers <= 2^n of form 2 x^2 + 3 y^2.

Table of values

n a(n)
0 0
1 1
2 2
3 4
4 7
5 14
6 23
7 42
8 76
9 139
10 258
11 482
12 907
13 1717
14 3269
15 6257
16 12020
17 23171
18 44762
19 86683
20 168233
21 327053
22 636837
23 1241723
24 2424228
25 4738426
26 9271299
27 18157441
28 35591647
29 69820626
30 137068908
31 269270450
32 529312241
33 1041093048
34 2048825748
35 4034059456

List of values

[0, 1, 2, 4, 7, 14, 23, 42, 76, 139, 258, 482, 907, 1717, 3269, 6257, 12020, 23171, 44762, 86683, 168233, 327053, 636837, 1241723, 2424228, 4738426, 9271299, 18157441, 35591647, 69820626, 137068908, 269270450, 529312241, 1041093048, 2048825748, 4034059456]

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

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