id:A111500 - OEIS Search Results

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Number of squares in an n X n grid of squares with diagonals.

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1, 10, 31, 72, 137, 234, 367, 544, 769, 1050, 1391, 1800, 2281, 2842, 3487, 4224, 5057, 5994, 7039, 8200, 9481, 10890, 12431, 14112, 15937, 17914, 20047, 22344, 24809, 27450, 30271, 33280, 36481, 39882, 43487, 47304, 51337, 55594, 60079, 64800 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`a(n) = n^3 + n^2/2 - 1/4 + 1/4*(-1)^n`
	MAPLE	`seq(n^3+n^2/2-1/4+1/4*(-1)^n, n=1..65);`
	CROSSREFS	`Cf. A100583.` `Sequence in context: A051943 A059306 A041190 this_sequence A042849 A097236 A061485` `Adjacent sequences: A111497 A111498 A111499 this_sequence A111501 A111502 A111503`
	KEYWORD	`nonn`
	AUTHOR	`Floor van Lamoen (fvlamoen(AT)hotmail.com), Nov 16 2005`

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Last modified November 30 22:12 EST 2008. Contains 150989 sequences.

AT&T Labs Research