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A210316 Number of (n+1)X5 0..3 arrays containing all values 0..3 with every 2X2 subblock having two or three distinct values, and new values 0..3 introduced in row major order 1
19186, 16048775, 11186190570, 7415631633670, 4840385164324833, 3143730516432515149, 2038470253990478011542, 1321089260079684340068116, 856020376460070983842489369, 554639966930051385009796429427 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A210320

LINKS

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

FORMULA

Empirical: a(n) = 848*a(n-1) -122300*a(n-2) -5801743*a(n-3) +682041320*a(n-4) -1213046081*a(n-5) -1079782780850*a(n-6) +27573638241302*a(n-7) +79725630193847*a(n-8) -11873109205022518*a(n-9) +131395804871513578*a(n-10) +986201712895823243*a(n-11) -29652374531996895310*a(n-12) +132452849847042036360*a(n-13) +1622629993578919995350*a(n-14) -18253509106659216838968*a(n-15) +6849069634272644477350*a(n-16) +714587571710513391501643*a(n-17) -2760444329694926932104549*a(n-18) -10516539662994187322703315*a(n-19) +86912495830872109675164069*a(n-20) -9563542017692602626829178*a(n-21) -1248365123628345697575639065*a(n-22) +2249181879462811987679557346*a(n-23) +9086435408361391418501120428*a(n-24) -30736207455851587697978075075*a(n-25) -25923589316759701283979550795*a(n-26) +202500201415812975536465857367*a(n-27) -72715906863721870790944600743*a(n-28) -720781514789318502643514797441*a(n-29) +801786923731748401090054422513*a(n-30) +1286931802588307290422443408052*a(n-31) -2522061032842347970441473677732*a(n-32) -674119438641704924434781252930*a(n-33) +3733616049201706012714214101006*a(n-34) -1013770420222518200606193339716*a(n-35) -2707380660785061103024598191772*a(n-36) +1579508813514184554109584102836*a(n-37) +942689284708178387720861782888*a(n-38) -859718979462997536027199561344*a(n-39) -125446929953546119395609975056*a(n-40) +229541474235873867982539795760*a(n-41) -8019298577799431458900026560*a(n-42) -31686621384563077338679511744*a(n-43) +3853494757916521671974788352*a(n-44) +2204406306231678899205504512*a(n-45) -367673092093538607145367552*a(n-46) -67950978187980533942738944*a(n-47) +13061961692650600938110976*a(n-48) +613878827815294878744576*a(n-49) -133694231899508024279040*a(n-50)

EXAMPLE

Some solutions for n=4

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

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

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

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

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

CROSSREFS

Sequence in context: A015302 A249106 A184196 * A323966 A035925 A186875

Adjacent sequences:  A210313 A210314 A210315 * A210317 A210318 A210319

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 20 2012

STATUS

approved

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Last modified July 23 20:44 EDT 2019. Contains 325264 sequences. (Running on oeis4.)