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A223677 Number of nX5 0..1 arrays with rows and antidiagonals unimodal 1
16, 256, 3177, 35509, 384009, 4106403, 43632367, 462307835, 4893189359, 51766786082, 547539109894, 5790804006475, 61241515380486, 647657786582245, 6849233638750700, 72433084682283498, 766004610399351979 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A223680

LINKS

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

FORMULA

Empirical: a(n) = 16*a(n-1) -65*a(n-2) +116*a(n-3) -387*a(n-4) -316*a(n-5) +5502*a(n-6) -6052*a(n-7) -5304*a(n-8) +10256*a(n-9) -13182*a(n-10) +1596*a(n-11) +36430*a(n-12) -48912*a(n-13) +27205*a(n-14) -2186*a(n-15) -10400*a(n-16) +7800*a(n-17) -2128*a(n-18) +192*a(n-19)

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Sequence in context: A283860 A223660 A223565 * A207277 A294329 A267929

Adjacent sequences:  A223674 A223675 A223676 * A223678 A223679 A223680

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 25 2013

STATUS

approved

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Last modified October 16 19:27 EDT 2021. Contains 348044 sequences. (Running on oeis4.)