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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.

A349596 Number of edge subsets E of the 3 X n grid graph such that E contains a path between the top left node and the bottom right node.

Table of values

n a(n)
1 1
2 40
3 1135
4 28942
5 707239
6 16963938
7 403490839
8 9560192914
9 226115020735
10 5343643837642
11 126235739481031
12 2981618243157330
13 70418570359871599
14 1663054542669694138
15 39275207266744385815
16 927528207559891996258
17 21904544495171662611391
18 517297785739589326153482

List of values

[1, 40, 1135, 28942, 707239, 16963938, 403490839, 9560192914, 226115020735, 5343643837642, 126235739481031, 2981618243157330, 70418570359871599, 1663054542669694138, 39275207266744385815, 927528207559891996258, 21904544495171662611391, 517297785739589326153482]

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

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