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A205895 Number of 3X(n+1) 0..2 arrays with 2X2 subblock determinants differing from horizontal neighbors and permanents differing from vertical neighbors 1
476, 6020, 79644, 1042382, 13544456, 176994692, 2306581930, 30091040770, 392413398860, 5118080533042, 66749915011740, 870564329275570, 11354001135466616, 148080426962160126, 1931284128582993192 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Row 2 of A205894
LINKS
FORMULA
Empirical: a(n) = 86*a(n-2) +760*a(n-3) +3738*a(n-4) +9250*a(n-5) +a(n-6) -91063*a(n-7) -361635*a(n-8) -436943*a(n-9) +545180*a(n-10) +1606007*a(n-11) -149237*a(n-12) -10835274*a(n-13) -8365056*a(n-14) +44179189*a(n-15) +68051483*a(n-16) -6957442*a(n-17) +198448706*a(n-18) -146999105*a(n-19) -544154048*a(n-20) +1098204290*a(n-21) -2585983256*a(n-22) +3394264711*a(n-23) -7112934200*a(n-24) +10220938911*a(n-25) -17676476120*a(n-26) +25686964067*a(n-27) -28974983280*a(n-28) +36101512820*a(n-29) -52062360186*a(n-30) +80356912008*a(n-31) -87054253395*a(n-32) +66459295760*a(n-33) -49224652363*a(n-34) +41257909396*a(n-35) -44546129363*a(n-36) +48770005992*a(n-37) -48882437796*a(n-38) +41497764875*a(n-39) -28207003189*a(n-40) +15301727220*a(n-41) -1145788038*a(n-42) -9390031300*a(n-43) +14075254039*a(n-44) -12164782493*a(n-45) +9366980411*a(n-46) -6563228511*a(n-47) +4321925900*a(n-48) -2380585725*a(n-49) +937035245*a(n-50) +96707209*a(n-51) -343995886*a(n-52) +296944264*a(n-53) -127738242*a(n-54) +30366396*a(n-55) +3756128*a(n-56) -7056960*a(n-57) +1710592*a(n-58) -471264*a(n-59) for n>63
EXAMPLE
Some solutions for n=3
..0..0..2..0....2..1..1..1....2..0..1..2....1..2..1..1....0..1..2..0
..0..2..0..1....1..0..1..0....1..2..0..1....1..0..1..2....2..2..0..2
..2..0..1..0....0..2..2..2....2..2..2..2....2..1..2..2....2..0..1..2
CROSSREFS
Sequence in context: A234077 A205287 A236519 * A235656 A264290 A181228
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 01 2012
STATUS
approved

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Last modified February 22 14:41 EST 2024. Contains 370256 sequences. (Running on oeis4.)