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A260067 Number of (n+2)X(5+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00000011 or 00000111 1
956, 2367, 6714, 12664, 25444, 77061, 185370, 361576, 898184, 2496222, 5552698, 11952765, 31341494, 80022569, 176929366, 411276097, 1064191962, 2586703244, 5858122594, 14132261009, 35603181364, 84838933138, 197147800646 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A260070

LINKS

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

FORMULA

Empirical: a(n) = 9*a(n-3) +49*a(n-4) -26*a(n-6) -312*a(n-7) -842*a(n-8) +38*a(n-9) +686*a(n-10) +3449*a(n-11) +7088*a(n-12) -830*a(n-13) -4844*a(n-14) -18040*a(n-15) -33155*a(n-16) +4232*a(n-17) +15646*a(n-18) +52245*a(n-19) +87752*a(n-20) -11520*a(n-21) -29970*a(n-22) -84645*a(n-23) -128641*a(n-24) +19022*a(n-25) +46762*a(n-26) +79957*a(n-27) +90454*a(n-28) -16484*a(n-29) -46682*a(n-30) -50717*a(n-31) -18348*a(n-32) +6652*a(n-33) +19384*a(n-34) +15200*a(n-35) +3168*a(n-36) -192*a(n-37) -1280*a(n-38) -2816*a(n-39) for n>43

EXAMPLE

Some solutions for n=4

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

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

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

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

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

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

CROSSREFS

Cf. A260070

Sequence in context: A055158 A187635 A076528 * A031903 A226851 A158410

Adjacent sequences:  A260064 A260065 A260066 * A260068 A260069 A260070

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jul 14 2015

STATUS

approved

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Last modified August 9 12:53 EDT 2020. Contains 336323 sequences. (Running on oeis4.)