A264569 -id:A264569 - cp's OEIS frontend

A264575 Number of (7+1)X(n+1) arrays of permutations of 0..n*8+7 with each element having directed index change 1,0 1,1 0,-1 or -1,1.

4, 64, 646, 18540, 403872, 13182464, 298587595, 8004883334, 207395987160, 5415371441696, 139437679992950, 3610605830997732, 93761760429319800, 2424276830794155853, 62680901817510938800, 1621243139189452222421

Offset: 1

R. H. Hardin, Nov 17 2015

nonn

Row 7 of A264569.

			Some solutions for n=4
..1..2..6..4..8....1..2..3..4..8....1..2..6..4..8....1..5..6..4..8
..0..7.11.12..3....0.10.11..9.13....0..7.11..9..3....0.10..2..3.13
..5.15.13.14..9....5..6..7.14.18....5.15.16.14.18...11.15..7.14..9
.16.10.18.19.23...16.20.21.12.23...10.17.12.19.13...16.17.18.12.23
.21.25.17.24.28...15.22.17.24.19...21.22.23.27.28...21.25.26.24.19
.20.27.22.29.33...26.30.28.32.33...26.20.31.29.24...20.27.22.32.33
.31.35.26.37.38...25.35.27.37.29...25.35.36.34.38...31.35.36.28.29
.36.30.32.39.34...36.31.38.39.34...30.37.32.39.33...30.37.38.39.34

R. H. Hardin, Table of n, a(n) for n = 1..79

Cf. A264569.

A264563 Number of (n+1)X(n+1) arrays of permutations of 0..(n+1)^2-1 with each element having directed index change 1,0 1,1 0,-1 or -1,1.

Original entry on oeis.org

1, 2, 10, 192, 7808, 1133040, 298587595, 235814997396, 454723725317760

Offset: 1

R. H. Hardin, Nov 17 2015

nonn

Diagonal of A264569.

			Some solutions for n=4
..1..5..3..4..8....1..2..3..4..8....1..2..6..4..8....1..2..3..7..8
..0..7..2.12.13....0..7.11.12.13....0..7.11.12..3....6..0.11..9..4
.11.15..6.14..9....5.15..6.14..9....5.15.16.14..9....5.12.16.14.18
.10.20.18.22.23...10.20.18.22.23...10.20.18.13.23...10.20.21.13.23
.21.16.17.24.19...21.16.17.24.19...21.22.17.24.19...15.22.17.24.19

Cf. A264569.

cp's OEIS Frontend

A264575 Number of (7+1)X(n+1) arrays of permutations of 0..n*8+7 with each element having directed index change 1,0 1,1 0,-1 or -1,1.

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