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.

A270064 Number of tilings of a 4 X n rectangle using monominoes and trominoes of any shape.

Table of values

n a(n)
0 1
1 3
2 45
3 590
4 7517
5 96176
6 1238818
7 15913695
8 204383373
9 2626057921
10 33738191906
11 433438712623
12 5568545948434
13 71541033899738
14 919110571684493
15 11808116466700575
16 151702772808195855
17 1948975423808006804
18 25039128916718657873
19 321685935180001027054

List of values

[1, 3, 45, 590, 7517, 96176, 1238818, 15913695, 204383373, 2626057921, 33738191906, 433438712623, 5568545948434, 71541033899738, 919110571684493, 11808116466700575, 151702772808195855, 1948975423808006804, 25039128916718657873, 321685935180001027054]

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

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