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.

A224018 Number of n X n 0..3 arrays with rows nondecreasing and antidiagonals unimodal.

Table of values

n a(n)
1 4
2 100
3 6796
4 772683
5 120352359
6 23151623729
7 5173325036371
8 1291969529189675
9 351545826740833046
10 102423287609988684833
11 31560026488902316691503
12 10191808855482615567911934
13 3425597818181959478072701084

List of values

[4, 100, 6796, 772683, 120352359, 23151623729, 5173325036371, 1291969529189675, 351545826740833046, 102423287609988684833, 31560026488902316691503, 10191808855482615567911934, 3425597818181959478072701084]

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

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