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A232000 Number of (3+1)X(n+1) 0..1 arrays with no element having a strict majority of its horizontal and antidiagonal neighbors equal to one 1
25, 156, 1024, 5778, 28900, 155496, 863041, 4712418, 25553025, 138835035, 755645121, 4112506265, 22371783184, 121697641615, 662076769761, 3601973220144, 19595814544656, 106606560821538, 579971141108100 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 3 of A231997

LINKS

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

FORMULA

Empirical: a(n) = 3*a(n-1) +44*a(n-3) +88*a(n-4) +244*a(n-5) +412*a(n-6) +785*a(n-7) +1313*a(n-8) +1564*a(n-9) +3248*a(n-10) -2968*a(n-11) -18164*a(n-12) -7660*a(n-13) +22974*a(n-14) +14538*a(n-15) -22428*a(n-16) -21672*a(n-17) +9720*a(n-18) +19660*a(n-19) +6068*a(n-20) -7822*a(n-21) -8466*a(n-22) +2740*a(n-23) +8928*a(n-24) +3864*a(n-25) -748*a(n-26) -1060*a(n-27) -1661*a(n-28) -925*a(n-29) -244*a(n-30) -212*a(n-31) -16*a(n-32) -32*a(n-33) -3*a(n-35) +a(n-36) for n>38

EXAMPLE

Some solutions for n=5

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

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

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

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

CROSSREFS

Sequence in context: A049522 A084073 A049523 * A260046 A316948 A139729

Adjacent sequences:  A231997 A231998 A231999 * A232001 A232002 A232003

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 16 2013

STATUS

approved

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Last modified May 28 16:37 EDT 2022. Contains 354119 sequences. (Running on oeis4.)