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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.

A336576 The final square number 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 59
2 947
3 313
4 3331
5 5659
6 67547
7 253801
8 676259
9 3162413
10 16604417
11 29135971
12 108235159
13 437456497

List of values

[59, 947, 313, 3331, 5659, 67547, 253801, 676259, 3162413, 16604417, 29135971, 108235159, 437456497]

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

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