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.

A242257 Number of binary words of length n that contain all sixteen 4-bit words as (possibly overlapping) contiguous subwords.

Table of values

n a(n)
19 256
20 1344
21 5376
22 19028
23 61808
24 188474
25 547350
26 1522758
27 4083256
28 10620590
29 26912658
30 66671138
31 161950112
32 386663750
33 909204980
34 2109158718
35 4834062186
36 10960141396
37 24608994426
38 54771900982
39 120939714274
40 265121486866
41 577386711942
42 1249925021562
43 2691031388142

List of values

[256, 1344, 5376, 19028, 61808, 188474, 547350, 1522758, 4083256, 10620590, 26912658, 66671138, 161950112, 386663750, 909204980, 2109158718, 4834062186, 10960141396, 24608994426, 54771900982, 120939714274, 265121486866, 577386711942, 1249925021562, 2691031388142]

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

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