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.

A007227 Number of distinct perforation patterns for deriving (v,b) = (n+2,n) punctured convolutional codes from (3,1).

Table of values

n a(n)
2 9
3 42
4 236
5 1287
6 7314
7 41990
8 245256
9 1448655
10 8649823
11 52106040
12 316360752
13 1933910820
14 11893566078
15 73537906926
16 456864894288
17 2850557192175
18 17854854154215
19 112230508880490
20 707714010205020
21 4475876883386895

List of values

[9, 42, 236, 1287, 7314, 41990, 245256, 1448655, 8649823, 52106040, 316360752, 1933910820, 11893566078, 73537906926, 456864894288, 2850557192175, 17854854154215, 112230508880490, 707714010205020, 4475876883386895]

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

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