A264877 Number of (n+1)X(7+1) arrays of permutations of 0..n*8+7 with each element having directed index change 0,1 0,-1 -2,0 or 1,1.

1, 49, 1101, 22152, 356692, 4747695, 68488297, 1050281271, 16268725036, 247512489984, 3713720283901, 55663627322361, 837518704332088, 12633257316861814, 190523379365155077, 2870374015520944177

Offset

1,2

Comments

Column 7 of A264878.

Links

R. H. Hardin, Table of n, a(n) for n = 1..95

Example

Some solutions for n=4
.16..2..1..4..5.21..7.23...16..2..3..4..5.21..7.23...16..0..3.19..5..6..7.23
..9..0.11.10..3.29.15..6....9..0..1.27.11.14.15..6....9.10..1..2.11..4.15.31
.32..8.19.20.36.12.13.14...32..8.19.10.36.12.13.22...32..8.17.20.36.12.13.14
.25.26.17.18.27.30.31.22...25.26.17.18.29.20.31.30...25.26.27.18.29.28.21.22
.33.24.35.34.37.28.39.38...33.24.35.34.37.28.39.38...33.24.35.34.37.38.39.30

Crossrefs

Cf. A264878.

Sequence in context: A012115 A284642 A304046 * A173246 A017765 A163005

Adjacent sequences: A264874 A264875 A264876 * A264878 A264879 A264880

Keyword

nonn

Author

R. H. Hardin, Nov 27 2015

Status

approved