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.

A274898 Number of 6Xn 0..2 arrays with no element equal to any value at offset (0,-1) (-1,-1) or (-2,0) and new values introduced in order 0..2.

Table of values

n a(n)
1 24
2 50
3 192
4 753
5 3017
6 12217
7 49697
8 202749
9 828828
10 3391310
11 13878192
12 56789705
13 232384474
14 950977585
15 3891812709
16 15927107508
17 65180736176
18 266747574843
19 1091648042865
20 4467513170474
21 18283077346563
22 74822562153129

List of values

[24, 50, 192, 753, 3017, 12217, 49697, 202749, 828828, 3391310, 13878192, 56789705, 232384474, 950977585, 3891812709, 15927107508, 65180736176, 266747574843, 1091648042865, 4467513170474, 18283077346563, 74822562153129]

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

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