id:A062410 - OEIS Search Results

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Square spiral sequence: numbers are placed in a square spiral, a(1)=1, a(n) is found as the sum of the row (in the previous direction) a(n-1) is in.

+0
4

1, 1, 2, 3, 4, 9, 11, 24, 28, 31, 94, 105, 114, 344, 375, 403, 427, 1663, 1777, 1882, 1976, 7725, 8152, 8555, 8930, 9274, 44612, 46588, 48470, 50247, 51910, 251101, 260375, 269305, 277860, 286012, 293737, 1690300, 1742210, 1792457, 1840927 (list; graph; listen)

	OFFSET	`1,3`
	LINKS	`F.M. van Lamoen, Spiral recurrence.`
	EXAMPLE	`The initial part of the square spiral sequence is` `.........344.114` `..4..3...2...105` `..9..1...1...94` `.11..24..28..31`
	CROSSREFS	`Cf. A063177, A063178.` `Sequence in context: A093514 A080231 A125774 this_sequence A145772 A027866 A100902` `Adjacent sequences: A062407 A062408 A062409 this_sequence A062411 A062412 A062413`
	KEYWORD	`nonn`
	AUTHOR	`Floor van Lamoen (fvlamoen(AT)hotmail.com), Jul 09 2001`

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Last modified November 25 08:46 EST 2009. Contains 167481 sequences.

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