A187703 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

A187703

Number of (n+1)X(n+1) 0..4 arrays with each 2X2 subblock off diagonal and antidiagonal nonsingular and the array of 2X2 subblock determinants antisymmetric about the diagonal and antidiagonal

113, 31461, 1718, 875696, 4612 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,1`
	COMMENTS	`Column 4 of A187705`
	LINKS	`Table of n, a(n) for n=1..5.`
	EXAMPLE	`Some solutions for 4X4` `..0..2..1..1....0..0..1..0....2..2..4..2....0..3..0..0....4..3..4..4` `..0..1..1..1....3..2..1..0....2..2..2..1....0..1..1..2....4..3..3..3` `..1..1..1..0....2..2..1..2....2..4..4..4....3..3..3..3....3..3..3..4` `..3..3..4..0....4..4..1..2....2..4..3..3....0..0..1..1....1..1..0..0`
	CROSSREFS	`Sequence in context: A218241 A152496 A176825 * A352400 A329105 A304324` `Adjacent sequences: A187700 A187701 A187702 * A187704 A187705 A187706`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin Mar 12 2011`
	STATUS	`approved`

License Agreements, Terms of Use, Privacy Policy. .

Last modified August 17 00:01 EDT 2022. Contains 356180 sequences. (Running on oeis4.)