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.

A221577 Number of 0..n arrays of length 7 with each element differing from at least one neighbor by something other than 1.

Table of values

n a(n)
1 16
2 345
3 4240
4 26911
5 117104
6 395641
7 1116400
8 2754635
9 6127696
10 12553189
11 24049616
12 43584535
13 75375280
14 125247281
15 201055024
16 313170691
17 475045520
18 703848925
19 1021190416
20 1453929359
21 2035077616
22 2804800105
23 3811518320

List of values

[16, 345, 4240, 26911, 117104, 395641, 1116400, 2754635, 6127696, 12553189, 24049616, 43584535, 75375280, 125247281, 201055024, 313170691, 475045520, 703848925, 1021190416, 1453929359, 2035077616, 2804800105, 3811518320]

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

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