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.

A265864 Number of 3Xn arrays containing n copies of 0..3-1 with no element plus any vertical neighbor equal to 3-1.

Table of values

n a(n)
1 2
2 22
3 152
4 1462
5 13772
6 139144
7 1431824
8 15086614
9 161254844
10 1745205892
11 19070813984
12 210091931944
13 2330150737904
14 25993622086384
15 291414635747552
16 3281265369826774
17 37087677409301804
18 420618333874721044

List of values

[2, 22, 152, 1462, 13772, 139144, 1431824, 15086614, 161254844, 1745205892, 19070813984, 210091931944, 2330150737904, 25993622086384, 291414635747552, 3281265369826774, 37087677409301804, 420618333874721044]

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

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