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A222100 Number of nX4 0..5 arrays with entries increasing mod 6 by 0, 1, 2 or 3 rightwards and downwards, starting with upper left zero 1
64, 6108, 591476, 57455502, 5585183876, 543019517890, 52797111762730, 5133443560512386, 499123853931892192, 48529752000392073542, 4718542457622698098922, 458783377102773490580554 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A222104

LINKS

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

FORMULA

Empirical: a(n) = 151*a(n-1) -6273*a(n-2) +110618*a(n-3) -904712*a(n-4) +2630178*a(n-5) +7987596*a(n-6) -72611530*a(n-7) +140477839*a(n-8) +129218977*a(n-9) -789095099*a(n-10) +720979656*a(n-11) +645249481*a(n-12) -1424564792*a(n-13) +476315366*a(n-14) +501277608*a(n-15) -460380720*a(n-16) +135434720*a(n-17) -13335600*a(n-18) -361696*a(n-19) +83568*a(n-20)

EXAMPLE

Some solutions for n=3

..0..3..3..3....0..0..3..4....0..0..3..0....0..3..3..4....0..0..0..1

..1..3..3..0....0..2..3..5....0..3..0..1....2..3..5..1....0..0..1..2

..2..3..3..3....2..2..4..0....3..0..2..2....3..4..5..2....3..0..2..3

CROSSREFS

Sequence in context: A317571 A240346 A009823 * A223265 A266631 A085525

Adjacent sequences:  A222097 A222098 A222099 * A222101 A222102 A222103

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 07 2013

STATUS

approved

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Last modified June 26 00:12 EDT 2022. Contains 354870 sequences. (Running on oeis4.)