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A279980 Number of 4Xn 0..1 arrays with no element equal to a strict majority of its horizontal and antidiagonal neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards. 1
0, 31, 296, 1922, 10491, 50690, 226771, 963728, 3941732, 15655280, 60749739, 231325874, 867192006, 3208394065, 11737643962, 42526452550, 152777627539, 544782076812, 1929805835927, 6795769111934, 23804414728200, 82983605105905 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Row 4 of A279977.

LINKS

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

R. H. Hardin, Empirical recurrence of order 68

FORMULA

Empirical recurrence of order 68 (see link above)

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Cf. A279977.

Sequence in context: A156094 A221430 A115151 * A001298 A027841 A221853

Adjacent sequences:  A279977 A279978 A279979 * A279981 A279982 A279983

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 24 2016

STATUS

approved

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Last modified January 22 12:13 EST 2019. Contains 319363 sequences. (Running on oeis4.)