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.

A000076 Number of integers <= 2^n of form 4 x^2 + 4 x y + 5 y^2.

Table of values

n a(n)
0 0
1 0
2 1
3 2
4 4
5 7
6 14
7 24
8 43
9 82
10 149
11 284
12 534
13 1015
14 1937
15 3713
16 7136
17 13759
18 26597
19 51537
20 100045
21 194586
22 378987
23 739161
24 1443465
25 2821923
26 5522689
27 10818037
28 21208747
29 41612533
30 81704494
31 160531078
32 315602635
33 620831732
34 1221915127
35 2406177404
36 4740454046
37 9343415302
38 18423548106
39 36342329321

List of values

[0, 0, 1, 2, 4, 7, 14, 24, 43, 82, 149, 284, 534, 1015, 1937, 3713, 7136, 13759, 26597, 51537, 100045, 194586, 378987, 739161, 1443465, 2821923, 5522689, 10818037, 21208747, 41612533, 81704494, 160531078, 315602635, 620831732, 1221915127, 2406177404, 4740454046, 9343415302, 18423548106, 36342329321]

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

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