The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A254491 T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with every 3X3 subblock diagonal maximum plus antidiagonal minimum nondecreasing horizontally, vertically and ne-to-sw antidiagonally 14
 512, 3264, 3264, 19456, 29952, 19456, 114880, 278848, 281024, 114880, 660480, 2523008, 3912576, 2520832, 660480, 3727552, 21822912, 51322752, 50028672, 21641920, 3727552, 20872192, 186999040, 656964096, 1018596736, 640020096 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Table starts .....512......3264......19456.......114880.........660480.........3727552 ....3264.....29952.....278848......2523008.......21822912.......186999040 ...19456....281024....3912576.....51322752......656964096......8552031360 ..114880...2520832...50028672...1018596736....20365586688....410218207872 ..660480..21641920..640020096..20457240960...615887502592..18812857512320 .3727552.186176000.8348864128.410404894080.18731454463744.871411470160000 LINKS R. H. Hardin, Table of n, a(n) for n = 1..284 FORMULA Empirical for column k: k=1: [linear recurrence of order 11] k=2: [order 27] k=3: [order 66] Empirical for row n: n=1: [same linear recurrence of order 11] n=2: [order 29] n=3: [order 70] EXAMPLE Some solutions for n=2 k=4 ..0..1..1..0..0..0....0..1..1..0..0..0....0..1..1..0..0..1....0..1..1..0..0..0 ..1..0..0..1..1..1....0..0..1..1..0..1....0..0..1..1..0..1....1..0..0..0..1..0 ..1..1..0..0..0..1....1..0..0..0..0..1....1..1..0..0..0..1....0..0..0..0..1..1 ..1..0..1..1..1..0....0..0..1..1..0..1....0..0..0..1..0..0....1..1..0..1..1..1 CROSSREFS Column 1 and row 1 are A253856 Sequence in context: A254168 A254457 A254161 * A253863 A253856 A253871 Adjacent sequences:  A254488 A254489 A254490 * A254492 A254493 A254494 KEYWORD nonn,tabl AUTHOR R. H. Hardin, Jan 31 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 | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified August 13 22:39 EDT 2022. Contains 356109 sequences. (Running on oeis4.)