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A224157 Number of nX7 0..1 arrays with diagonals and rows unimodal and antidiagonals nondecreasing 1
29, 267, 1252, 4339, 13283, 39037, 114537, 340134, 1025559, 3143071, 9794989, 31018972, 99708260, 324764638, 1069736878, 3556096357, 11908005965, 40101772888, 135631552056, 460218357877, 1565350043268, 5333698073679 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 7 of A224158
LINKS
FORMULA
Empirical: a(n) = 8*a(n-1) -20*a(n-2) +11*a(n-3) +13*a(n-4) +18*a(n-5) -83*a(n-6) +98*a(n-7) -99*a(n-8) +159*a(n-9) -264*a(n-10) +312*a(n-11) -324*a(n-12) +647*a(n-13) -757*a(n-14) +88*a(n-15) +283*a(n-16) -257*a(n-17) -451*a(n-18) +365*a(n-19) -1074*a(n-20) +477*a(n-21) -1092*a(n-22) +258*a(n-23) -916*a(n-24) -142*a(n-25) +114*a(n-26) +202*a(n-27) +118*a(n-28) -56*a(n-29) +56*a(n-30) -24*a(n-31) +8*a(n-32) -8*a(n-33) for n>37
EXAMPLE
Some solutions for n=3
..1..0..0..0..0..0..0....0..0..0..0..0..0..0....0..0..0..0..0..1..1
..0..1..0..0..0..0..0....0..0..0..0..0..1..0....0..0..0..1..1..1..1
..1..1..1..1..0..0..0....1..1..1..1..1..0..0....0..0..1..1..1..1..1
CROSSREFS
Sequence in context: A142683 A042634 A223769 * A223776 A224408 A120823
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 31 2013
STATUS
approved

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Last modified March 29 11:45 EDT 2024. Contains 371278 sequences. (Running on oeis4.)