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.

A212407 Number of binary arrays of length 2*n+5 with no more than n ones in any length 2n subsequence (=50% duty cycle).

Table of values

n a(n)
1 34
2 166
3 747
4 3179
5 13185
6 54042
7 220054
8 892387
9 3609005
10 14567294
11 58714842
12 236397086
13 950965002
14 3822869204
15 15359318444
16 61681353571
17 247609729669
18 993662549686
19 3986465243314
20 15989373858826
21 64118439206974

List of values

[34, 166, 747, 3179, 13185, 54042, 220054, 892387, 3609005, 14567294, 58714842, 236397086, 950965002, 3822869204, 15359318444, 61681353571, 247609729669, 993662549686, 3986465243314, 15989373858826, 64118439206974]

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

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