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A260205 Number of (n+2)X(6+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000000 00000001 or 00010001 1
1044, 2864, 15715, 71846, 359112, 1819901, 8929505, 44267361, 220591626, 1093197469, 5423252998, 26935491998, 133662286873, 663325778447, 3292652533635, 16341908119400, 81107178453353, 402565198408300 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A260207

LINKS

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

FORMULA

Empirical: a(n) = a(n-1) +4*a(n-2) +66*a(n-3) +95*a(n-4) +43*a(n-5) -720*a(n-6) -1911*a(n-7) -1442*a(n-8) +3264*a(n-9) +10821*a(n-10) +19141*a(n-11) +2814*a(n-12) -66628*a(n-13) -89804*a(n-14) +31181*a(n-15) +153550*a(n-16) +92838*a(n-17) +40230*a(n-18) -70110*a(n-19) -229684*a(n-20) -107631*a(n-21) -94711*a(n-22) +28881*a(n-23) +390574*a(n-24) +124645*a(n-25) -26599*a(n-26) -25097*a(n-27) -277598*a(n-28) +259486*a(n-29) +159878*a(n-30) -12870*a(n-31) -21470*a(n-32) -444709*a(n-33) -78037*a(n-34) -123573*a(n-35) +71536*a(n-36) +64021*a(n-37) -594*a(n-38) +19314*a(n-39) -12660*a(n-40) +3610*a(n-41) +920*a(n-42) -1448*a(n-43) +704*a(n-44) -128*a(n-45) for n>46

EXAMPLE

Some solutions for n=4

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

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

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

CROSSREFS

Cf. A260207

Sequence in context: A252618 A231112 A213811 * A224604 A045027 A324320

Adjacent sequences:  A260202 A260203 A260204 * A260206 A260207 A260208

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jul 19 2015

STATUS

approved

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Last modified June 13 00:57 EDT 2021. Contains 344980 sequences. (Running on oeis4.)