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.

A248102 Number of tilings of a 5 X 2n rectangle using 2n pentominoes of shapes N, Y.

Table of values

n a(n)
0 1
1 0
2 0
3 18
4 24
5 238
6 842
7 4360
8 25900
9 112178
10 613140
11 2941170
12 14789274
13 74895336
14 369603312
15 1866863986
16 9294391952
17 46543456838
18 233028690018
19 1164275409976
20 5830080180396
21 29149585256266
22 145845002931724
23 729627382873090
24 3649578988919810

List of values

[1, 0, 0, 18, 24, 238, 842, 4360, 25900, 112178, 613140, 2941170, 14789274, 74895336, 369603312, 1866863986, 9294391952, 46543456838, 233028690018, 1164275409976, 5830080180396, 29149585256266, 145845002931724, 729627382873090, 3649578988919810]

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

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