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.

A335560 Number of ways to tile an n X n square with 1 X 1 squares and (n-1) X 1 vertical or horizontal strips.

Table of values

n a(n)
1 1
2 16
3 131
4 335
5 851
6 2207
7 5891
8 16175
9 45491
10 130367
11 378851
12 1112015
13 3286931
14 9762527
15 29091011
16 86879855
17 259853171
18 777986687
19 2330814371
20 6986151695
21 20945872211
22 62812450847
23 188387020931
24 565060399535
25 1694979872051
26 5084536963007
27 15252805582691

List of values

[1, 16, 131, 335, 851, 2207, 5891, 16175, 45491, 130367, 378851, 1112015, 3286931, 9762527, 29091011, 86879855, 259853171, 777986687, 2330814371, 6986151695, 20945872211, 62812450847, 188387020931, 565060399535, 1694979872051, 5084536963007, 15252805582691]

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

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