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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.

A336494 The number of steps for a walk on a square spiral numbered board when starting on square 1 and stepping to an unvisited square containing the lowest prime number, where the square is within a block of size (2n+1) X (2n+1) centered on the current square. If no unvisited prime numbered squares exist within the block the walk ends.

Table of values

n a(n)
1 7
2 37
3 65
4 308
5 654
6 7214
7 21992
8 49850
9 222791
10 1146922
11 1912101
12 6372680
13 23077800

List of values

[7, 37, 65, 308, 654, 7214, 21992, 49850, 222791, 1146922, 1912101, 6372680, 23077800]

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

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