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A209894 Number of (n+1)X6 0..2 arrays with every 2X2 subblock having two distinct values, and new values 0..2 introduced in row major order 1
3824, 156800, 6762544, 299879808, 13410113952, 602072007808, 27070584920080, 1217939572945968, 54810457024823344, 2466878665680288560, 111032730766170634576, 4997607784894750868592, 224945109676899756678832 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A209897

LINKS

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

FORMULA

Empirical: a(n) = 59*a(n-1) +104*a(n-2) -42972*a(n-3) +225150*a(n-4) +13058670*a(n-5) -99533244*a(n-6) -2197387878*a(n-7) +19875267460*a(n-8) +229851257770*a(n-9) -2366141610633*a(n-10) -15894063929471*a(n-11) +186716781277733*a(n-12) +749911518956427*a(n-13) -10357596907410544*a(n-14) -24242602552629694*a(n-15) +419545423349562323*a(n-16) +513419955614790263*a(n-17) -12743636649243029327*a(n-18) -5588724654850929951*a(n-19) +295948232414959255193*a(n-20) -41030128867263773257*a(n-21) -5330465080579574799097*a(n-22) +3096535616962170688023*a(n-23) +75245900033979090263854*a(n-24) -70343205102961136452140*a(n-25) -838515904703767168682000*a(n-26) +1033530787470818142569456*a(n-27) +7408191483521721497325888*a(n-28) -11102771711988258151207232*a(n-29) -51956877639237774786347264*a(n-30) +91197930041539107221974784*a(n-31) +288637005364861044268135424*a(n-32) -584918449332204408531975168*a(n-33) -1261391919782270562967646208*a(n-34) +2960105091371020869876793344*a(n-35) +4274172957537436605506322432*a(n-36) -11873183283623499865326174208*a(n-37) -10900689087152926975005589504*a(n-38) +37756515336414977978883178496*a(n-39) +19498582274969148853931212800*a(n-40) -94868879756767967625610788864*a(n-41) -18957098993963844384982564864*a(n-42) +187014088298245520981590278144*a(n-43) -10916938203208559688348073984*a(n-44) -285860793239614379638877323264*a(n-45) +79644827524571502161338302464*a(n-46) +332665796495918740601567182848*a(n-47) -159698020481282454813413474304*a(n-48) -286182176633624129437528227840*a(n-49) +196804266468189564590637449216*a(n-50) +172676696186043581657438486528*a(n-51) -164414144679340498216040792064*a(n-52) -64875360508321568620864864256*a(n-53) +93966732830765490489645858816*a(n-54) +8984417088496218246521815040*a(n-55) -35640178748572809806303199232*a(n-56) +4005503615190852715862294528*a(n-57) +8337517133060640365135003648*a(n-58) -2350211162187270322185568256*a(n-59) -1012217318863117434857979904*a(n-60) +494800755740146443961237504*a(n-61) +26276649640154457035505664*a(n-62) -44578672501261648598663168*a(n-63) +5284342715267323252441088*a(n-64) +1083745547797691306606592*a(n-65) -284446307629606977404928*a(n-66) +17414014635957968437248*a(n-67)

EXAMPLE

Some solutions for n=4

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

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

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

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

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

CROSSREFS

Sequence in context: A232083 A234668 A259522 * A255621 A212228 A231416

Adjacent sequences:  A209891 A209892 A209893 * A209895 A209896 A209897

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 14 2012

STATUS

approved

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Last modified January 26 17:58 EST 2022. Contains 350599 sequences. (Running on oeis4.)