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A209826 Number of (n+1)X6 0..2 arrays with every 2X2 subblock having one or two distinct values, and new values 0..2 introduced in row major order 1
6278, 479693, 37744836, 3025299170, 243825684732, 19693265761805, 1591829337311006, 128707386720462708, 10407791300279336908, 841650529261100111720, 68063119605020375756575, 5504203358815345853102044 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 5 of A209829
LINKS
FORMULA
Empirical: a(n) = 138*a(n-1) -5291*a(n-2) +41948*a(n-3) +1246056*a(n-4) -19527125*a(n-5) -94011205*a(n-6) +2626583096*a(n-7) +1511468746*a(n-8) -177763031682*a(n-9) +138302103902*a(n-10) +7019042194083*a(n-11) -7969961832191*a(n-12) -174075869696471*a(n-13) +186648296877104*a(n-14) +2832030056843165*a(n-15) -2415279667981283*a(n-16) -31006473277373149*a(n-17) +19111371400840450*a(n-18) +232526299989981431*a(n-19) -99505929279539438*a(n-20) -1213858407562141252*a(n-21) +370715377868919185*a(n-22) +4475559340570646909*a(n-23) -1096935236489998102*a(n-24) -11786638113405890713*a(n-25) +2781294795279031273*a(n-26) +22309407784237294666*a(n-27) -5920732121027419916*a(n-28) -30324789854047144258*a(n-29) +9761270047165567745*a(n-30) +29307097858909263706*a(n-31) -11646482334059398589*a(n-32) -19688084504632376578*a(n-33) +9649239854975506279*a(n-34) +8805727983122157768*a(n-35) -5380377784965746096*a(n-36) -2398306480372906352*a(n-37) +1943991227752730806*a(n-38) +304993982412468654*a(n-39) -428499039605489966*a(n-40) +11979961616427444*a(n-41) +51791333004986360*a(n-42) -7840293455999272*a(n-43) -2807693417208336*a(n-44) +702780093944768*a(n-45) +47980140467616*a(n-46) -22670306024704*a(n-47) +380884158080*a(n-48) +247814909440*a(n-49) -6850234368*a(n-50) -945684480*a(n-51)
EXAMPLE
Some solutions for n=4
..0..1..1..1..0..1....0..0..1..2..1..0....0..1..2..1..2..0....0..1..2..1..1..0
..0..0..0..1..1..1....1..0..1..2..1..0....0..1..1..2..2..2....1..1..1..1..0..0
..2..0..1..0..0..0....0..1..1..1..1..1....0..1..1..2..1..1....0..0..0..0..0..2
..2..0..0..1..0..0....0..0..0..0..1..1....0..0..1..2..2..2....2..2..0..2..0..2
..0..2..0..1..0..0....0..1..1..1..1..1....1..0..1..1..2..2....2..2..2..2..2..2
CROSSREFS
Sequence in context: A254635 A189655 A071091 * A107582 A213869 A350416
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 13 2012
STATUS
approved

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Last modified July 19 22:34 EDT 2024. Contains 374441 sequences. (Running on oeis4.)