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.

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A323699 Number of uncrossed knight's walks as specified in A323700, counting isomorphisms only once.

Original entry on oeis.org

1, 8, 56, 404, 2563, 16516, 102280, 639532, 3899662
Offset: 4

Views

Author

Hugo Pfoertner, Jan 24 2019

Keywords

Comments

First differs at a(7)=404 from A323700(7)=406, because there are two walks of length 7 trapped at both ends. If seen as unrooted walks, their path shapes become identical after path reversal and reflection.

Examples

			In algebraic chess notation, the two walks double counted in A323700(7) are
  N c4 d2 e4 c5 a4 b2 d1 c3 and N d4 c2 e3 d5 b4 a2 c1 b3.

Links

Crossrefs

Cf. A003192, A323131, A323559, A323560, A323700.
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