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A251315 Number of (n+1)X(6+1) 0..1 arrays with no 2X2 subblock having the maximum of its diagonal elements greater than the absolute difference of its antidiagonal elements 1
894, 6717, 48980, 361845, 2688099, 20080487, 149982413, 1118147932, 8339278058, 62282522930, 465322296567, 3474970062796, 25946388026878, 193774924760383, 1447385899773104, 10810627973172104, 80740157829966698, 603025339161891324 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A251317

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

FORMULA

Empirical: a(n) = 34*a(n-1) -560*a(n-2) +6078*a(n-3) -48943*a(n-4) +308559*a(n-5) -1566445*a(n-6) +6511537*a(n-7) -22375703*a(n-8) +63785808*a(n-9) -150461053*a(n-10) +290535552*a(n-11) -447421686*a(n-12) +514662450*a(n-13) -349575947*a(n-14) -110030485*a(n-15) +721140799*a(n-16) -1154390677*a(n-17) +1115896183*a(n-18) -601911588*a(n-19) -77410187*a(n-20) +549773049*a(n-21) -654771081*a(n-22) +494568920*a(n-23) -274584584*a(n-24) +121966579*a(n-25) -43228651*a(n-26) +4188852*a(n-27) +11167249*a(n-28) -10337396*a(n-29) +4829526*a(n-30) -1488803*a(n-31) +239091*a(n-32) +47360*a(n-33) -39329*a(n-34) +20491*a(n-35) -7917*a(n-36) +2263*a(n-37) -466*a(n-38) +31*a(n-39) -9*a(n-40) +2*a(n-41) +2*a(n-42) for n>44

EXAMPLE

Some solutions for n=3

..0..1..1..0..1..1..1....0..1..1..1..0..1..1....1..1..0..0..0..1..0

..1..0..1..0..0..0..0....1..0..0..1..1..0..1....0..1..1..1..0..1..1

..1..0..1..0..0..0..0....1..1..0..0..1..1..0....0..0..0..1..1..0..0

..1..0..1..1..1..0..0....0..1..0..0..0..1..1....0..0..0..0..1..1..0

CROSSREFS

Sequence in context: A063878 A063167 A210007 * A218814 A264329 A287944

Adjacent sequences:  A251312 A251313 A251314 * A251316 A251317 A251318

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 01 2014

STATUS

approved

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Last modified November 30 17:12 EST 2021. Contains 349424 sequences. (Running on oeis4.)