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A210305 Number of (n+1)X5 0..3 arrays containing all values 0..3 with every 2X2 subblock having one or three distinct values, and new values 0..3 introduced in row major order 1
4553, 655743, 85724987, 11061291451, 1424160340819, 183304255111499, 23591932615876019, 3036344556314579403, 390785135915738953267, 50295014264153237451531, 6473092626848079207302451 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A210309

LINKS

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

FORMULA

Empirical: a(n) = 260*a(n-1) -23288*a(n-2) +929838*a(n-3) -12001245*a(n-4) -334728110*a(n-5) +13677246260*a(n-6) -97982783232*a(n-7) -3038968483483*a(n-8) +61195800410360*a(n-9) +21617308239752*a(n-10) -10672008917494402*a(n-11) +77526891307988953*a(n-12) +740183820173087714*a(n-13) -11993209513343105860*a(n-14) +1757788347100408132*a(n-15) +831215814617340342320*a(n-16) -3626826186455581358000*a(n-17) -28284540559276107423616*a(n-18) +255592495497158190025072*a(n-19) +251472921681558655747376*a(n-20) -8953225998033769175695072*a(n-21) +16464543868595186192082752*a(n-22) +176604280245762880053747200*a(n-23) -734118266281625015141049088*a(n-24) -1732590776838801409725204224*a(n-25) +14878214282327021473824928768*a(n-26) -1632048876867875141848579072*a(n-27) -176456313876275191138951528448*a(n-28) +275325919515911232333562363904*a(n-29) +1236150931517543249393523490816*a(n-30) -3718761489967820580413373988864*a(n-31) -4219444988326081346462792581120*a(n-32) +26532685864866441003684492673024*a(n-33) -4031028009268447870327055187968*a(n-34) -113394942239733332464880215654400*a(n-35) +106471669450351021801461776384000*a(n-36) +288206551250917417355764897415168*a(n-37) -481709443052870836912613364858880*a(n-38) -384039040102328706184157404856320*a(n-39) +1142268907564109813860532685373440*a(n-40) +91027236998423324239131310030848*a(n-41) -1580464812314641136289277739532288*a(n-42) +473969325227938496307658542284800*a(n-43) +1268980715592062152644700409954304*a(n-44) -689711550621859287710203188871168*a(n-45) -548172194555268379337156183719936*a(n-46) +403997167828185646769666181300224*a(n-47) +106908215762795739559038382243840*a(n-48) -102992983528709537221967712616448*a(n-49) -7280608274553819303010390507520*a(n-50) +10221635153981636051140175986688*a(n-51) +41096544975325809960739143680*a(n-52) -236382646173102461890791997440*a(n-53)

EXAMPLE

Some solutions for n=4

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

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

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

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

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

CROSSREFS

Sequence in context: A193311 A020432 A186471 * A102748 A032751 A020436

Adjacent sequences:  A210302 A210303 A210304 * A210306 A210307 A210308

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 19 2012

STATUS

approved

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Last modified October 3 02:59 EDT 2022. Contains 357230 sequences. (Running on oeis4.)