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A232593 Number of (4+1)X(n+1) 0..2 arrays with every element next to itself plus and minus one within the range 0..2 horizontally or antidiagonally, with no adjacent elements equal 1
6, 456, 122, 6406, 3002, 93236, 68072, 1364998, 1320362, 20063788, 24123134, 296095446, 423016306, 4386696696, 7216047494, 65227876552, 120687373030, 973264614932, 1988957705626, 14569296892014, 32409581296990 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 4 of A232589

LINKS

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

FORMULA

Empirical: a(n) = 20*a(n-2) +16*a(n-3) -92*a(n-4) -260*a(n-5) +82*a(n-6) +1038*a(n-7) +1278*a(n-8) -1350*a(n-9) -4927*a(n-10) -3536*a(n-11) +5500*a(n-12) +12930*a(n-13) +8739*a(n-14) -8650*a(n-15) -22849*a(n-16) -24728*a(n-17) -3836*a(n-18) +33686*a(n-19) +62865*a(n-20) +36392*a(n-21) -44749*a(n-22) -110478*a(n-23) -67221*a(n-24) +47184*a(n-25) +126718*a(n-26) +76044*a(n-27) -30029*a(n-28) -98898*a(n-29) -68985*a(n-30) +2372*a(n-31) +49486*a(n-32) +46722*a(n-33) +19080*a(n-34) -1646*a(n-35) -13297*a(n-36) -15236*a(n-37) -12882*a(n-38) -4684*a(n-39) +949*a(n-40) +3512*a(n-41) +2385*a(n-42) +1194*a(n-43) +233*a(n-44) -6*a(n-45) -67*a(n-46) -18*a(n-47) -2*a(n-48) +2*a(n-49) for n>54

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Sequence in context: A258873 A244195 A338943 * A267082 A051735 A024084

Adjacent sequences:  A232590 A232591 A232592 * A232594 A232595 A232596

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 26 2013

STATUS

approved

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Last modified June 30 05:22 EDT 2022. Contains 354913 sequences. (Running on oeis4.)