The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

Thanks to everyone who made a donation during our annual appeal!
To see the list of donors, or make a donation, see the OEIS Foundation home page.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A264638 T(n,k)=Number of nXk arrays of permutations of 0..n*k-1 with rows nondecreasing modulo 2 and columns nondecreasing modulo 4. 6
 1, 1, 1, 2, 3, 1, 4, 28, 16, 1, 12, 400, 960, 128, 2, 36, 7776, 107568, 46656, 1152, 4, 144, 229392, 21565440, 71663616, 4561920, 12960, 8, 576, 9082368, 10027929600, 229132800000, 98288640000, 829440000, 269568, 16, 2880, 481406976 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,4 COMMENTS Table starts ..1......1.........2...........4...........12..........36...........144 ..1......3........28.........400.........7776......229392.......9082368 ..1.....16.......960......107568.....21565440.10027929600.7163873280000 ..1....128.....46656....71663616.229132800000 ..2...1152...4561920.98288640000 ..4..12960.829440000 ..8.269568 .16 LINKS R. H. Hardin, Table of n, a(n) for n = 1..39 EXAMPLE Some solutions for n=3 k=4 ..4..8..1..9....0..4..8..1....0..4..5..1....0..2..5..3....4..8..6..0 ..0..6..2..5...10..2..7..9....2..8.11..9....8.10..1..7...10..9..7..5 .10..7.11..3....6.11..3..5....6.10..3..7....4..6..9.11....2..1.11..3 CROSSREFS Row 1 is A111942(n+1). Sequence in context: A264659 A264560 A300625 * A201737 A080063 A187680 Adjacent sequences:  A264635 A264636 A264637 * A264639 A264640 A264641 KEYWORD nonn,tabl AUTHOR R. H. Hardin, Nov 19 2015 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified January 23 01:30 EST 2020. Contains 331166 sequences. (Running on oeis4.)