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.

A214353 Number of 3 X 3 X 3 triangular 0..n arrays with no element lying outside the (possibly reversed) range delimited by its sw and se neighbors.

Table of values

n a(n)
1 26
2 169
3 660
4 1951
5 4822
6 10507
7 20840
8 38421
9 66802
10 110693
11 176188
12 271011
13 404782
14 589303
15 838864
16 1170569
17 1604682
18 2164993
19 2879204
20 3779335
21 4902150
22 6289603
23 7989304
24 10055005
25 12547106
26 15533181
27 19088524
28 23296715
29 28250206

List of values

[26, 169, 660, 1951, 4822, 10507, 20840, 38421, 66802, 110693, 176188, 271011, 404782, 589303, 838864, 1170569, 1604682, 2164993, 2879204, 3779335, 4902150, 6289603, 7989304, 10055005, 12547106, 15533181, 19088524, 23296715, 28250206]

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

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