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.

A201083 Number of -3..3 arrays of n elements with first and second differences also in -3..3.

Table of values

n a(n)
1 7
2 37
3 153
4 651
5 2771
6 11817
7 50391
8 214867
9 916173
10 3906507
11 16657167
12 71025391
13 302848889
14 1291333199
15 5506183213
16 23478102983
17 100109512887
18 426862194475
19 1820120064499
20 7760905257671
21 33092130346043
22 141103267528637

List of values

[7, 37, 153, 651, 2771, 11817, 50391, 214867, 916173, 3906507, 16657167, 71025391, 302848889, 1291333199, 5506183213, 23478102983, 100109512887, 426862194475, 1820120064499, 7760905257671, 33092130346043, 141103267528637]

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

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