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.

A001931 Number of fixed 3-dimensional polycubes with n cells; lattice animals in the simple cubic lattice (6 nearest neighbors), face-connected cubes.

Table of values

n a(n)
1 1
2 3
3 15
4 86
5 534
6 3481
7 23502
8 162913
9 1152870
10 8294738
11 60494549
12 446205905
13 3322769321
14 24946773111
15 188625900446
16 1435074454755
17 10977812452428
18 84384157287999
19 651459315795897
20 5049008190434659
21 39269513463794006
22 306405169166373418

List of values

[1, 3, 15, 86, 534, 3481, 23502, 162913, 1152870, 8294738, 60494549, 446205905, 3322769321, 24946773111, 188625900446, 1435074454755, 10977812452428, 84384157287999, 651459315795897, 5049008190434659, 39269513463794006, 306405169166373418]

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

Content is available under The OEIS End-User License Agreement.