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A259294 Number of (n+1)X(5+1) 0..1 arrays with each 2X2 subblock having clockwise pattern 0001 0101 or 0111 1
434, 3938, 31774, 273686, 2293928, 19528726, 165147350, 1402044186, 11882217182, 100805628896, 854788219326, 7250421894706, 61489557032118, 521532393880894, 4423217189081992, 37515428883279070, 318180075628925406 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A259297

LINKS

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

FORMULA

Empirical: a(n) = 4*a(n-1) +94*a(n-2) -260*a(n-3) -3104*a(n-4) +6922*a(n-5) +48854*a(n-6) -94118*a(n-7) -411428*a(n-8) +687376*a(n-9) +1991983*a(n-10) -2792826*a(n-11) -5747356*a(n-12) +6404184*a(n-13) +9882208*a(n-14) -8117120*a(n-15) -9774592*a(n-16) +5218304*a(n-17) +5062656*a(n-18) -1310720*a(n-19) -1048576*a(n-20)

EXAMPLE

Some solutions for n=3

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

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

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

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

CROSSREFS

Cf. A259297

Sequence in context: A108785 A219033 A237386 * A050507 A145318 A054987

Adjacent sequences:  A259291 A259292 A259293 * A259295 A259296 A259297

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jun 23 2015

STATUS

approved

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Last modified August 14 18:13 EDT 2022. Contains 356122 sequences. (Running on oeis4.)