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.

A263119 Number of (n+3) X (1+3) 0..1 arrays with each row divisible by 15 and column not divisible by 15, read as a binary number with top and left being the most significant bits.

Table of values

n a(n)
1 14
2 29
3 59
4 119
5 238
6 477
7 955
8 1911
9 3822
10 7645
11 15291
12 30583
13 61166
14 122333
15 244667
16 489335
17 978670
18 1957341
19 3914683
20 7829367
21 15658734
22 31317469
23 62634939
24 125269879
25 250539758
26 501079517
27 1002159035
28 2004318071
29 4008636142

List of values

[14, 29, 59, 119, 238, 477, 955, 1911, 3822, 7645, 15291, 30583, 61166, 122333, 244667, 489335, 978670, 1957341, 3914683, 7829367, 15658734, 31317469, 62634939, 125269879, 250539758, 501079517, 1002159035, 2004318071, 4008636142]

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

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