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A206193 Number of (n+1)X5 0..3 arrays with the number of clockwise edge increases in every 2X2 subblock equal to two 1
68180, 5972392, 527945420, 46704516192, 4131608458140, 365468694266436, 32327015669963752, 2859398851677838652, 252919077269469177332, 22371116614243605962696, 1978761607489986202200072 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A206197

LINKS

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

FORMULA

Empirical: a(n) = 182*a(n-1) -12004*a(n-2) +415480*a(n-3) -8853859*a(n-4) +126860780*a(n-5) -1289524547*a(n-6) +9523743134*a(n-7) -51068777938*a(n-8) +192111360492*a(n-9) -439536805765*a(n-10) +123375390008*a(n-11) +3350213610392*a(n-12) -13024192131153*a(n-13) +15930041442264*a(n-14) +62368141603379*a(n-15) -366404617203830*a(n-16) +752070396824663*a(n-17) +183801635239481*a(n-18) -5068022786445445*a(n-19) +14232658005953631*a(n-20) -27239219734522543*a(n-21) +67543448390055318*a(n-22) -189380456822496217*a(n-23) +359698186059711841*a(n-24) -352001537255358915*a(n-25) +149211548566299027*a(n-26) -482172263712426285*a(n-27) +1837850024880558262*a(n-28) -2536427093507181031*a(n-29) -76797065651444300*a(n-30) +3296000796319362439*a(n-31) +619616134205467421*a(n-32) -12492584079381734747*a(n-33) +18456044380698042369*a(n-34) -6277092897298636065*a(n-35) -14904702224653191032*a(n-36) +22060151606971342463*a(n-37) -7648135521787651695*a(n-38) -8849848562303425202*a(n-39) +10019643948658059552*a(n-40) +205970292858437768*a(n-41) -7836482072410929685*a(n-42) +6998666575490914763*a(n-43) -2332335436415594915*a(n-44) -767081781945942946*a(n-45) +1695746347742151173*a(n-46) -860795289270765768*a(n-47) -656278600351921584*a(n-48) +491914658871178517*a(n-49) +157475347940078023*a(n-50) -195175378597420476*a(n-51) -3952840614780389*a(n-52) +17786104824460301*a(n-53) +24965620043420133*a(n-54) +801930069620387*a(n-55) -11862045800221349*a(n-56) +37878482250943*a(n-57) +701917001215691*a(n-58) +970284308515894*a(n-59) +65259701649948*a(n-60) -96105288061917*a(n-61) -51798674181470*a(n-62) -15738036525022*a(n-63) +5269455880264*a(n-64) +1290286596342*a(n-65) +768172777163*a(n-66) -51366586551*a(n-67) -11887411470*a(n-68) -4642143720*a(n-69) -6591574780*a(n-70) +415584680*a(n-71) +59348212*a(n-72) +6709172*a(n-73) +11723720*a(n-74) -243696*a(n-75) -112288*a(n-76) -4992*a(n-77) -1024*a(n-78)

EXAMPLE

Some solutions for n=4

..1..2..1..1..0....3..2..1..0..2....3..2..3..1..1....2..2..1..0..0

..0..1..0..3..2....2..3..2..1..3....2..0..1..0..2....1..0..3..2..1

..1..2..1..0..3....0..0..3..2..1....0..1..3..1..3....2..1..0..3..2

..1..3..2..1..0....3..1..0..3..2....1..2..0..2..0....3..2..1..0..3

..1..0..3..2..1....0..2..1..0..3....1..0..3..2..1....0..3..2..1..0

CROSSREFS

Sequence in context: A237389 A234662 A250924 * A209855 A206665 A206174

Adjacent sequences: A206190 A206191 A206192 * A206194 A206195 A206196

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 04 2012

STATUS

approved

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Last modified December 1 01:13 EST 2022. Contains 358453 sequences. (Running on oeis4.)