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.

A278876 Number of tilings of a 4 X n rectangle using pentominoes of any shape and monominoes.

Table of values

n a(n)
0 1
1 1
2 25
3 311
4 4101
5 56864
6 728857
7 9616962
8 127040707
9 1669454156
10 22011707486
11 289906000417
12 3817261693883
13 50281947199556
14 662232832054368
15 8721984517729672
16 114875834939622917
17 1512983475914685706
18 19927016855891011234
19 262452496836729312910

List of values

[1, 1, 25, 311, 4101, 56864, 728857, 9616962, 127040707, 1669454156, 22011707486, 289906000417, 3817261693883, 50281947199556, 662232832054368, 8721984517729672, 114875834939622917, 1512983475914685706, 19927016855891011234, 262452496836729312910]

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

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