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.

A233289 Number of tilings of a 3 X 3 X n box using 3n bricks of shape 3 X 1 X 1.

Table of values

n a(n)
0 1
1 2
2 4
3 21
4 92
5 320
6 1213
7 4822
8 18556
9 70929
10 273808
11 1057020
12 4069737
13 15676666
14 60424640
15 232846801
16 897164316
17 3457096532
18 13321674833
19 51332757274
20 197801848744
21 762200458321
22 2937024077340
23 11317358546188
24 43609682555721
25 168043191679374

List of values

[1, 2, 4, 21, 92, 320, 1213, 4822, 18556, 70929, 273808, 1057020, 4069737, 15676666, 60424640, 232846801, 897164316, 3457096532, 13321674833, 51332757274, 197801848744, 762200458321, 2937024077340, 11317358546188, 43609682555721, 168043191679374]

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

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