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