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.

A005773 Number of directed animals of size n (or directed n-ominoes in standard position).

Table of values

n a(n)
0 1
1 1
2 2
3 5
4 13
5 35
6 96
7 267
8 750
9 2123
10 6046
11 17303
12 49721
13 143365
14 414584
15 1201917
16 3492117
17 10165779
18 29643870
19 86574831
20 253188111
21 741365049
22 2173243128
23 6377181825
24 18730782252
25 55062586341
26 161995031226
27 476941691177
28 1405155255055
29 4142457992363

List of values

[1, 1, 2, 5, 13, 35, 96, 267, 750, 2123, 6046, 17303, 49721, 143365, 414584, 1201917, 3492117, 10165779, 29643870, 86574831, 253188111, 741365049, 2173243128, 6377181825, 18730782252, 55062586341, 161995031226, 476941691177, 1405155255055, 4142457992363]

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

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