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A227592 Number of nX4 0,1 arrays indicating 2X2 subblocks of some larger (n+1)X5 binary array having nonzero determinant 1
16, 256, 3840, 56928, 841984, 12420672, 182940432, 2693032800, 39634170368, 583231191264, 8581920953616, 126274620899072, 1857983333261344, 27337874035216704, 402240996868184512, 5918440689583411776 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A227594

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..162

R. H. Hardin, Empirical recurrence of order 63

FORMULA

Empirical recurrence of order 63 (see link above)

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Sequence in context: A206571 A206791 A221665 * A206840 A222932 A220107

Adjacent sequences:  A227589 A227590 A227591 * A227593 A227594 A227595

KEYWORD

nonn

AUTHOR

R. H. Hardin Jul 17 2013

STATUS

approved

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Last modified January 19 11:42 EST 2022. Contains 350465 sequences. (Running on oeis4.)