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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.

A063651 Number of ways to tile a 7 X n rectangle with 1 X 1 and 2 X 2 tiles.

Table of values

n a(n)
0 1
1 1
2 21
3 85
4 747
5 4375
6 31387
7 202841
8 1382259
9 9167119
10 61643709
11 411595537
12 2758179839
13 18448963469
14 123518353059
15 826573277157
16 5532716266089
17 37028886137273
18 247839719105625
19 1658772577825883
20 11102227136885119

List of values

[1, 1, 21, 85, 747, 4375, 31387, 202841, 1382259, 9167119, 61643709, 411595537, 2758179839, 18448963469, 123518353059, 826573277157, 5532716266089, 37028886137273, 247839719105625, 1658772577825883, 11102227136885119]

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

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