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A258532 Number of (3+2)X(n+2) 0..1 arrays with every 3X3 subblock sum of the two maximums of the central row and central column plus the two minimums of the diagonal and antidiagonal nondecreasing horizontally, vertically and ne-to-sw antidiagonally 1
14184, 85259, 523716, 3133384, 18460629, 106485657, 606576800, 3416159956, 19226604054, 108024515196, 607457990432, 3414790673649, 19206077118085, 108039270365307, 607889560061188, 3420580168661212, 19249140658467974 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 3 of A258530

LINKS

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

FORMULA

Empirical: a(n) = 12*a(n-1) -38*a(n-2) -32*a(n-3) +379*a(n-4) -1168*a(n-5) +2072*a(n-6) +4756*a(n-7) -10786*a(n-8) -29864*a(n-9) -1812*a(n-10) +80000*a(n-11) -657762*a(n-12) +3299328*a(n-13) +2102472*a(n-14) -12998648*a(n-15) -116749*a(n-16) -30229796*a(n-17) -68744086*a(n-18) +148872448*a(n-19) +1158685607*a(n-20) -444634768*a(n-21) -3636584816*a(n-22) +624070596*a(n-23) -8066581456*a(n-24) +11290519264*a(n-25) +53521763936*a(n-26) -16292626368*a(n-27) -104210784704*a(n-28) -146719887872*a(n-29) +245882904832*a(n-30) +254599577600*a(n-31) -383082742784*a(n-32) +645842774016*a(n-33) -801745596416*a(n-34) -1232390627328*a(n-35) +2690572042240*a(n-36) -1429994373120*a(n-37) -125407264768*a(n-38) +2861540048896*a(n-39) -4771857039360*a(n-40) +1722833960960*a(n-41) +2003257262080*a(n-42) -3508692582400*a(n-43) +3703117447168*a(n-44) -1069874675712*a(n-45) -1947868332032*a(n-46) +2181642059776*a(n-47) -1265069195264*a(n-48) +267093278720*a(n-49) +576062488576*a(n-50) -541165879296*a(n-51) +137438953472*a(n-52) for n>58

EXAMPLE

Some solutions for n=2

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

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

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

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

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

CROSSREFS

Cf. A258530

Sequence in context: A184565 A251068 A184559 * A258525 A254917 A270800

Adjacent sequences:  A258529 A258530 A258531 * A258533 A258534 A258535

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jun 02 2015

STATUS

approved

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Last modified October 20 10:10 EDT 2021. Contains 348100 sequences. (Running on oeis4.)