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.

A129877 Sequence i_{a_n} arising in enumeration of arrays of directed blocks (see Quaintance reference for precise definition), where i_n is A129876, a_n is A129878.

Table of values

n a(n)
1 2
2 0
3 6
4 12
5 58
6 220
7 958
8 4184

List of values

[2, 0, 6, 12, 58, 220, 958, 4184]

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