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.

A208876 Number of 5Xn 0..3 arrays with new values 0..3 introduced in row major order and no element equal to more than one of its immediate leftward or upward or right-upward antidiagonal neighbors.

Table of values

n a(n)
1 51
2 28246
3 16205218
4 9130195864
5 5134914951163
6 2887736845657700
7 1624001903270517563
8 913306247364608338853
9 513625349165806029159816
10 288852734835443348518960257
11 162445063843968446617446229944

List of values

[51, 28246, 16205218, 9130195864, 5134914951163, 2887736845657700, 1624001903270517563, 913306247364608338853, 513625349165806029159816, 288852734835443348518960257, 162445063843968446617446229944]

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

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