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.

A218517 Number of n X 3 arrays of the minimum value of corresponding elements and their horizontal or antidiagonal neighbors in a random 0..3 n X 3 array.

Table of values

n a(n)
1 16
2 286
3 4634
4 76214
5 1254462
6 20655650
7 340133516
8 5601018048
9 92232936766
10 1518816980614
11 25010647012824
12 411855079591306
13 6782095959978908
14 111682064830460636
15 1839089815861812230
16 30284641999299892776

List of values

[16, 286, 4634, 76214, 1254462, 20655650, 340133516, 5601018048, 92232936766, 1518816980614, 25010647012824, 411855079591306, 6782095959978908, 111682064830460636, 1839089815861812230, 30284641999299892776]

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

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