The On-Line Encyclopedia of Integer Sequences (OEIS)

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A239990

Number of 6Xn 0..3 arrays with no element equal to zero plus the sum of elements to its left or two plus the sum of the elements above it or one plus the sum of the elements diagonally to its northwest, modulo 4
(history; published version)

#5 by Russ Cox at Mon Aug 11 22:46:11 EDT 2014

LINKS

R. H. Hardin, <a href="/A239990/a239990.txt">Empirical polynomial of degree 55</a>

Discussion

Mon Aug 11

22:46

OEIS Server: https://oeis.org/edit/global/2322

#4 by R. H. Hardin at Sun Mar 30 07:09:41 EDT 2014

STATUS

editing

approved

#3 by R. H. Hardin at Sun Mar 30 07:09:34 EDT 2014

LINKS

R. H. Hardin, <a href="/A239990/a239990.txt">Empirical polynomial of degree 55</a>

R. H. Hardin, <a href="/A239990/b239990.txt">Table of n, a(n) for n = 1..210</a>

#2 by R. H. Hardin at Sun Mar 30 07:08:41 EDT 2014

NAME

allocated for R. H. Hardin

Number of 6Xn 0..3 arrays with no element equal to zero plus the sum of elements to its left or two plus the sum of the elements above it or one plus the sum of the elements diagonally to its northwest, modulo 4

DATA

10, 84, 935, 9079, 83658, 652346, 4803152, 33097266, 216706121, 1349071998, 8021288399, 45621294425, 248975151409, 1305176292249, 6573063784889, 31800829162681, 147862529519971, 661287427073134, 2848137371338660

OFFSET

1,1

COMMENTS

Row 6 of A239986

FORMULA

Empirical polynomial of degree 55 (see link above)

EXAMPLE

Some solutions for n=3

..3..0..0....3..0..0....3..0..0....3..0..0....3..0..0....3..0..0....3..0..0

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

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

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

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

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

KEYWORD

allocated

nonn

AUTHOR

R. H. Hardin, Mar 30 2014

STATUS

approved

editing

#1 by R. H. Hardin at Sun Mar 30 06:56:02 EDT 2014

NAME

allocated for R. H. Hardin

KEYWORD

allocated

STATUS

approved