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.

A214909 Number of 5X5X5 triangular 0..n arrays with every horizontal row nondecreasing and having the same average value.

Table of values

n a(n)
1 2
2 38
3 242
4 1802
5 7550
6 31412
7 100350
8 310079
9 811472
10 2065406
11 4695974
12 10458806
13 21370898
14 42897546
15 80938346
16 150245395
17 265231474
18 462690716
19 774729470
20 1283610082
21 2057355212
22 3266479406
23 5043183866
24 7727895633
25 11557992252

List of values

[2, 38, 242, 1802, 7550, 31412, 100350, 310079, 811472, 2065406, 4695974, 10458806, 21370898, 42897546, 80938346, 150245395, 265231474, 462690716, 774729470, 1283610082, 2057355212, 3266479406, 5043183866, 7727895633, 11557992252]

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

Content is available under The OEIS End-User License Agreement.