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A258542 Number of (n+2)X(5+2) 0..1 arrays with no 3x3 subblock diagonal sum less than the antidiagonal sum or central row sum equal to the central column sum 1
25056, 81796, 142544, 367236, 726880, 1784896, 3826716, 9302500, 21443688, 53027524, 129029424, 325730304, 820227456, 2103323044, 5399925160, 13983062500, 36263854752, 94418540176, 246096476872, 642572179236 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A258545

LINKS

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

FORMULA

Empirical: a(n) = 3*a(n-1) +13*a(n-2) -42*a(n-3) -71*a(n-4) +255*a(n-5) +210*a(n-6) -885*a(n-7) -355*a(n-8) +1950*a(n-9) +305*a(n-10) -2865*a(n-11) +2865*a(n-13) -305*a(n-14) -1950*a(n-15) +355*a(n-16) +885*a(n-17) -210*a(n-18) -255*a(n-19) +71*a(n-20) +42*a(n-21) -13*a(n-22) -3*a(n-23) +a(n-24) for n>27

EXAMPLE

Some solutions for n=3

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

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

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

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

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

CROSSREFS

Cf. A258545

Sequence in context: A263815 A125268 A212726 * A205041 A252614 A253530

Adjacent sequences:  A258539 A258540 A258541 * A258543 A258544 A258545

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jun 02 2015

STATUS

approved

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Last modified May 22 16:42 EDT 2022. Contains 353957 sequences. (Running on oeis4.)