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A210048 Number of (n+1)X5 0..2 arrays containing all values 0..2 with every 2X2 subblock having two distinct values, and new values 0..2 introduced in row major order 1
475, 12377, 332891, 8989701, 240224641, 6356262535, 166752843125, 4344981788295, 112605356395583, 2905874746795745, 74734699001382433, 1916868366238281647, 49059100825999735487, 1253394404988516740191 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A210052

LINKS

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

FORMULA

Empirical: a(n) = 58*a(n-1) -992*a(n-2) +1114*a(n-3) +104383*a(n-4) -609244*a(n-5) -3158300*a(n-6) +31872941*a(n-7) +14255768*a(n-8) -695247797*a(n-9) +851352494*a(n-10) +7722215712*a(n-11) -17461446135*a(n-12) -44607174085*a(n-13) +153341052250*a(n-14) +107386696583*a(n-15) -724717887559*a(n-16) +133505885446*a(n-17) +1890011566228*a(n-18) -1409205824752*a(n-19) -2511295843328*a(n-20) +3234462976416*a(n-21) +1147782485632*a(n-22) -3211415530368*a(n-23) +620083812608*a(n-24) +1267243773440*a(n-25) -658602110976*a(n-26) -85186113536*a(n-27) +120800202752*a(n-28) -16266002432*a(n-29) -5194055680*a(n-30) +1509949440*a(n-31) -104857600*a(n-32)

EXAMPLE

Some solutions for n=4

..0..0..0..0..1....0..1..0..1..0....0..1..2..2..2....0..1..1..2..1

..0..1..0..1..0....1..0..0..0..0....0..1..1..1..1....1..1..2..1..1

..0..0..0..0..1....0..0..1..0..2....0..0..0..1..2....1..2..1..2..1

..1..1..0..1..0....2..0..0..0..0....1..0..1..1..1....1..2..1..2..1

..2..1..0..1..1....2..2..2..2..2....1..0..1..0..0....1..1..2..1..1

CROSSREFS

Sequence in context: A104649 A165463 A252518 * A263705 A048428 A253395

Adjacent sequences:  A210045 A210046 A210047 * A210049 A210050 A210051

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 16 2012

STATUS

approved

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Last modified December 3 05:29 EST 2020. Contains 338899 sequences. (Running on oeis4.)