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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.

A182981 Number of grid point that are covered at the n-th stage of the cellular automata which is a version "forest" of the shell model of partitions, with a(0)=1. The outers shells are represented as trees.

Table of values

n a(n)
0 1
1 3
2 5
3 7
4 13
5 17
6 31
7 39

List of values

[1, 3, 5, 7, 13, 17, 31, 39]

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

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