A260282 Number of (n+2)X(6+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000000 00000001 or 00001011

714, 2726, 15306, 60955, 264502, 1271212, 5588466, 24324681, 110763233, 496845217, 2197293358, 9844054535, 44142441243, 196695517269, 878487450144, 3930961242547, 17556842722229, 78410067260274, 350493365447613

Offset

1,1

Comments

Column 6 of A260284

Links

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

Formula

Empirical: a(n) = a(n-1) +89*a(n-3) +43*a(n-4) +51*a(n-5) -2613*a(n-6) -3252*a(n-7) -2004*a(n-8) +42231*a(n-9) +67549*a(n-10) +40335*a(n-11) -442022*a(n-12) -745049*a(n-13) -402698*a(n-14) +3072812*a(n-15) +5054911*a(n-16) +2610067*a(n-17) -14752482*a(n-18) -22658541*a(n-19) -11279551*a(n-20) +49592551*a(n-21) +69444531*a(n-22) +34080096*a(n-23) -120192993*a(n-24) -148497038*a(n-25) -70980174*a(n-26) +216455315*a(n-27) +225940850*a(n-28) +99628106*a(n-29) -303015649*a(n-30) -249433031*a(n-31) -93548174*a(n-32) +340672379*a(n-33) +208428605*a(n-34) +59725911*a(n-35) -304726290*a(n-36) -137261595*a(n-37) -29696696*a(n-38) +208546864*a(n-39) +70096200*a(n-40) +12046824*a(n-41) -104295612*a(n-42) -26223876*a(n-43) -1357496*a(n-44) +38144900*a(n-45) +6862432*a(n-46) -1641504*a(n-47) -10861196*a(n-48) -1526020*a(n-49) +709392*a(n-50) +2264892*a(n-51) +362592*a(n-52) -63792*a(n-53) -260208*a(n-54) -33552*a(n-55) +13392*a(n-57) for n>63

Example

Some solutions for n=4
..1..0..0..0..0..0..0..0....0..0..0..0..1..0..0..1....0..0..0..0..0..0..0..0
..0..0..0..0..0..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..1..0..0..0..0..0..0....1..0..0..0..0..0..0..0
..0..0..0..0..0..0..0..0....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..1..0..0..0....0..0..0..0..0..0..1..0
..1..0..1..0..0..0..0..0....0..1..0..0..0..0..0..1....1..0..0..1..0..0..0..0

Crossrefs

Cf. A260284

Sequence in context: A256509 A259674 A321493 * A360358 A166841 A166829

Adjacent sequences: A260279 A260280 A260281 * A260283 A260284 A260285

Keyword

nonn

Author

R. H. Hardin, Jul 22 2015

Status

approved