OFFSET

3,2

COMMENTS

a(12) >= 57.

LINKS

Donald E Knuth, The Art of Computer Programming, exercises on "knight grids" in Section 7.2.2.3 (preliminary draft)

Don Knuth, CWEB program

EXAMPLE

a(5) = 7 because of the following embedding of P2 X P7 into N5:

- - 6 1 -

6 1 3 - 5 where the vertices of P2 X P7 are

3 - 5 7 2 1 2 3 4 5 6 7

- 7 2 4 - 1 2 3 4 5 6 7

- 4 - - -

CROSSREFS

KEYWORD

nonn,more

AUTHOR

Don Knuth, Feb 10 2022

STATUS

approved