A156503 - OEIS

This site is supported by donations to The OEIS Foundation.

A156503

Number of nXn arrays of squares of integers, symmetric about main diagonal, with all rows summing to 40.

2, 6, 60, 2914, 1216320, 1982323016, 10802428568204, 144294430454318540 (list; graph; refs; listen; history; internal format)

	OFFSET	`2,1`
	CROSSREFS	`Sequence in context: A108640 A084971 A001577 * A077175 A139771 A129665` `Adjacent sequences: A156500 A156501 A156502 * A156504 A156505 A156506`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin (rhhardin(AT)att.net) Feb 09 2009`

Content is available under The OEIS End-User License Agreement .

Last modified February 14 16:21 EST 2012. Contains 205635 sequences.