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

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A202784 T(n,k) is the number of n X n 0..k arrays with row and column sums equal. 10
 2, 3, 4, 4, 9, 14, 5, 16, 87, 140, 6, 25, 340, 5673, 4322, 7, 36, 1001, 89520, 2577513, 434542, 8, 49, 2442, 790425, 290838284, 8459809773, 144109562, 9, 64, 5215, 4756140, 11991502235, 12092687195284, 207495141083975, 165431317452, 10, 81 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Table starts ............2...............3..............4................5............6 ............4...............9.............16...............25...........36 ...........14..............87............340.............1001.........2442 ..........140............5673..........89520...........790425......4756140 .........4322.........2577513......290838284......11991502235.255657603186 .......434542......8459809773.12092687195284.3632894572698505 ....144109562.207495141083975 .165431317452 LINKS R. H. Hardin, Table of n, a(n) for n = 1..42 EXAMPLE Some solutions for n=4 k=3 ..3..1..2..1....2..2..0..3....1..1..1..2....1..3..0..0....1..2..0..2 ..2..3..2..0....1..2..2..2....3..0..1..1....1..0..1..2....3..1..0..1 ..2..2..0..3....3..0..3..1....0..3..2..0....2..0..1..1....0..0..3..2 ..0..1..3..3....1..3..2..1....1..1..1..2....0..1..2..1....1..2..2..0 CROSSREFS Rows 3..5 are A202785, A202786, A202787. Columns 1..15 are A067209, A067210, A067211, A067212, A067213, A067214, A067215, A067216, A067217, A067218, A067219, A067220, A067221, A067222, A067223. Sequence in context: A228740 A269583 A250361 * A118263 A217478 A279788 Adjacent sequences:  A202781 A202782 A202783 * A202785 A202786 A202787 KEYWORD nonn,tabl AUTHOR R. H. Hardin, Dec 24 2011 EXTENSIONS Added crossrefs - R. H. Hardin, Jan 05 2012 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 July 31 00:50 EDT 2021. Contains 346365 sequences. (Running on oeis4.)