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 A235577 T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the difference of the upper and lower median value of each 2X2 subblock in lexicographically nondecreasing order rowwise and columnwise 4
 256, 2894, 2894, 28978, 102188, 28978, 268448, 3103656, 3103656, 268448, 2377726, 82875972, 317142694, 82875972, 2377726, 20374112, 2014103692, 28760293894, 28760293894, 2014103692, 20374112, 170668898, 45287503606, 2318212983882 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Table starts ........256.........2894...........28978...........268448..........2377726 .......2894.......102188.........3103656.........82875972.......2014103692 ......28978......3103656.......317142694......28760293894....2318212983882 .....268448.....82875972.....28760293894....9569624142260.2861670695225974 ....2377726...2014103692...2318212983882.2861670695225974 ...20374112..45287503606.166487069932858 ..170668898.960171131904 .1404828230 LINKS R. H. Hardin, Table of n, a(n) for n = 1..40 FORMULA Empirical for column 1: [linear recurrence of order 17] EXAMPLE Some solutions for n=2 k=4 ..0..0..0..0..3....0..0..0..0..0....0..0..0..0..0....0..0..0..0..3 ..1..0..1..1..0....0..1..1..1..1....0..1..0..1..2....0..0..1..0..1 ..3..0..3..1..3....0..3..0..1..0....0..2..0..3..3....1..3..2..0..3 CROSSREFS Sequence in context: A236588 A236585 A235818 * A235574 A235824 A235582 Adjacent sequences: A235574 A235575 A235576 * A235578 A235579 A235580 KEYWORD nonn,tabl AUTHOR R. H. Hardin, Jan 12 2014 STATUS approved

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Last modified December 7 18:28 EST 2023. Contains 367660 sequences. (Running on oeis4.)