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A253980 Number of (n+2)X(3+2) 0..1 arrays with every 3X3 subblock diagonal maximum plus antidiagonal maximum nondecreasing horizontally and vertically 1
21304, 417518, 8727838, 179261149, 3672381306, 75620185999, 1556452499274, 32027982651882, 659238041669648, 13568633472966170, 279271703727266760, 5748131163323313403, 118311298400157452800, 2435148116665821992581 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A253985

LINKS

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

R. H. Hardin, Empirical recurrence of order 68

FORMULA

Empirical recurrence of order 68 (see link above)

EXAMPLE

Some solutions for n=1

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

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

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

CROSSREFS

Sequence in context: A177857 A254385 A254392 * A250532 A234454 A319017

Adjacent sequences:  A253977 A253978 A253979 * A253981 A253982 A253983

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 21 2015

STATUS

approved

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Last modified November 20 13:14 EST 2019. Contains 329336 sequences. (Running on oeis4.)