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A263953 Number of (n+2)X(2+2) arrays of permutations of 0..n*4+7 filled by rows with each element moved 0 or 1 knight moves, and rows and columns in increasing lexicographic order. 1
40, 606, 8783, 135933, 2222154, 36482594, 597854055, 9871552803, 163131172868, 2693232362730, 44459353882426, 734216744614975, 12125829937309705, 200247240702667641, 3306824333319457287, 54608938288288875708 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A263955.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..159

EXAMPLE

Some solutions for n=4

..0..1..2..5....0..1..2..3....0..1..4..5....0..1..2..5....0..1..4..5

..4.14.15..7....4.11.15..7....2.14..8..9....4.14..8..9....2..3.15..7

..6..9..3.11....8..9.10..5....6.15..3.18....6..7..3.13....8..9.12.11

.10.20..8.22...12.13.23..6...12.19..7.22...10.11.21.22...10.19.14..6

.16.17.12.21...16.17.18.19...16.23.11.10...16.23.20.19...16.23.18.13

.18.19.13.23...20.21.22.14...20.21.13.17...18.12.15.17...20.21.22.17

CROSSREFS

Cf. A263955.

Sequence in context: A185744 A269497 A097823 * A002847 A057808 A269778

Adjacent sequences: A263950 A263951 A263952 * A263954 A263955 A263956

KEYWORD

nonn

AUTHOR

R. H. Hardin, Oct 30 2015

STATUS

approved

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Last modified November 30 21:57 EST 2022. Contains 358453 sequences. (Running on oeis4.)