id:A068225 - OEIS Search Results

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Neighbor in 1-2 direction of numbers arranged as clockwise spiral.

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8

2, 11, 12, 3, 4, 1, 8, 9, 10, 27, 28, 29, 30, 13, 14, 15, 16, 5, 6, 7, 22, 23, 24, 25, 26, 51, 52, 53, 54, 55, 56, 31, 32, 33, 34, 35, 36, 17, 18, 19, 20, 21, 44, 45, 46, 47, 48, 49, 50, 83, 84, 85, 86, 87, 88, 89, 90, 57, 58, 59, 60, 61, 62, 63, 64, 37, 38, 39, 40, 41, 42, 43 (list; graph; listen)

	OFFSET	`1,1`
	LINKS	`F. Ellermann, Some EIS sequences based on a spiral of natural numbers.` `Index entries for sequences that are permutations of the natural numbers.`
	EXAMPLE	`7 8 9 10: ..., a(7)= 8, a(8)= 9, a(9)= 10, ...` `6 1 2 11: ..., a(6)= 1, a(1)= 2, a(2)= 11, ... (see A054552, A054567).` `5 4 3 12: ..., a(5)= 4, a(4)= 3, a(3)= 12, ...`
	CROSSREFS	`n = A068226(A068225(n)). Right (left) part of middle row is A054552 (A054567).` `Sequence in context: A027828 A106371 A090009 this_sequence A043080 A108199 A137904` `Adjacent sequences: A068222 A068223 A068224 this_sequence A068226 A068227 A068228`
	KEYWORD	`nonn,easy`
	AUTHOR	`Frank.Ellermann(AT)t-online.de, Feb 22 2002`

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Last modified September 6 16:04 EDT 2008. Contains 143483 sequences.

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