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.

A000205 Number of positive integers <= 2^n of form x^2 + 3 y^2.

Table of values

n a(n)
0 1
1 1
2 3
3 4
4 8
5 14
6 25
7 45
8 82
9 151
10 282
11 531
12 1003
13 1907
14 3645
15 6993
16 13456
17 25978
18 50248
19 97446
20 189291
21 368338
22 717804
23 1400699
24 2736534
25 5352182
26 10478044
27 20531668
28 40264582
29 79022464
30 155196838
31 304997408
32 599752463
33 1180027022
34 2322950591
35 4575114295

List of values

[1, 1, 3, 4, 8, 14, 25, 45, 82, 151, 282, 531, 1003, 1907, 3645, 6993, 13456, 25978, 50248, 97446, 189291, 368338, 717804, 1400699, 2736534, 5352182, 10478044, 20531668, 40264582, 79022464, 155196838, 304997408, 599752463, 1180027022, 2322950591, 4575114295]

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

Content is available under The OEIS End-User License Agreement.