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.

A222550 Number of (n+3) X 1 arrays of occupancy after each element moves up to +-3 places but not 0.

Table of values

n a(n)
1 31
2 102
3 359
4 1279
5 4537
6 15929
7 56041
8 197313
9 694561
10 2443809
11 8598567
12 30254246
13 106446779
14 374510087
15 1317616614
16 4635657529
17 16309130459
18 57378359687
19 201866467555
20 710197956209
21 2498584711494
22 8790394014302
23 30925899907467

List of values

[31, 102, 359, 1279, 4537, 15929, 56041, 197313, 694561, 2443809, 8598567, 30254246, 106446779, 374510087, 1317616614, 4635657529, 16309130459, 57378359687, 201866467555, 710197956209, 2498584711494, 8790394014302, 30925899907467]

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

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