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

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A237574 T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the upper median minus the lower median of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one 6
 256, 1876, 1876, 13924, 24332, 13924, 103264, 315664, 315664, 103264, 769680, 4146324, 7379204, 4146324, 769680, 5705156, 54395184, 173478980, 173478980, 54395184, 5705156, 42501300, 712810024, 4093774632, 7415425124, 4093774632 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Table starts .......256.........1876..........13924............103264...............769680 ......1876........24332.........315664...........4146324.............54395184 .....13924.......315664........7379204.........173478980...........4093774632 ....103264......4146324......173478980........7415425124.........313460630304 ....769680.....54395184.....4093774632......313460630304.......23898935623162 ...5705156....712810024....95639726868....13253873415032.....1807232491974520 ..42501300...9341685548..2255748816966...561018557350096...138024943528283880 .315065200.122455823868.52746091216472.23744013911896432.10448941120238123892 LINKS R. H. Hardin, Table of n, a(n) for n = 1..84 FORMULA Empirical for column k: k=1: [linear recurrence of order 14] for n>15 k=2: [order 45] EXAMPLE Some solutions for n=2 k=4 ..0..0..0..1..1....0..0..1..1..3....0..0..1..0..0....0..0..1..2..0 ..0..2..1..2..3....1..0..3..0..0....1..2..1..0..3....0..0..1..1..2 ..3..3..2..0..2....0..1..1..2..0....2..3..3..1..0....3..1..2..3..2 CROSSREFS Sequence in context: A237891 A237158 A237151 * A237569 A237544 A206752 Adjacent sequences: A237571 A237572 A237573 * A237575 A237576 A237577 KEYWORD nonn,tabl AUTHOR R. H. Hardin, Feb 09 2014 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 January 26 22:13 EST 2023. Contains 359836 sequences. (Running on oeis4.)