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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.

A166769 Number of n X 5 1..2 arrays containing at least one of each value, and all equal values connected.

Table of values

n a(n)
1 8
2 90
3 712
4 4942
5 32426
6 206392
7 1284728
8 7855758
9 47333834
10 281703020
11 1659086104
12 9684388606
13 56098465446
14 322820680276
15 1847076802248
16 10515831592642
17 59608838934806
18 336604310563828
19 1894399026364292
20 10630153480987994
21 59494181482941446
22 332206086480550664

List of values

[8, 90, 712, 4942, 32426, 206392, 1284728, 7855758, 47333834, 281703020, 1659086104, 9684388606, 56098465446, 322820680276, 1847076802248, 10515831592642, 59608838934806, 336604310563828, 1894399026364292, 10630153480987994, 59494181482941446, 332206086480550664]

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

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