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.

A276250 Number of 4Xn 0..2 arrays with no element equal to any value at offset (-2,-1) (-1,1) or (0,-2) and new values introduced in order 0..2.

Table of values

n a(n)
1 14
2 144
3 347
4 1447
5 6372
6 26325
7 115682
8 509750
9 2196820
10 9590448
11 41943114
12 182345942
13 794079132
14 3464843904
15 15086188944
16 65723682133
17 286477934932
18 1248121989813
19 5437932782722
20 23696963843058
21 103252809255037

List of values

[14, 144, 347, 1447, 6372, 26325, 115682, 509750, 2196820, 9590448, 41943114, 182345942, 794079132, 3464843904, 15086188944, 65723682133, 286477934932, 1248121989813, 5437932782722, 23696963843058, 103252809255037]

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

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