A256986 Solution to Popular Computing Contest 4, the Square Spiral.

1, 5, 14, 30, 54, 84, 123, 168, 220, 277, 343, 416, 495, 583, 675, 777, 0, 1000, 1121, 1252, 1391, 1532, 1683, 1844, 2010, 2183, 2364, 2551, 2743, 2949, 3163, 3378, 3603, 3835, 4073, 4320, 4573, 4832, 5099, 5379, 5658, 5945, 6245, 0, 6861, 7181, 7508, 7839, 0

Offset

0,2

Comments

See links for precise definition.

Links

Lars Blomberg, Table of n, a(n) for n = 0..10000

Popular Computing (Calabasas, CA), Contest 4 Results (solution from Jeffrey Shallit), Vol. 4 (No. 40, July 1976), scanned copy of page PC40-12.

Popular Computing (Calabasas, CA), Contest 4 Results (solution from Jeffrey Shallit), Vol. 4 (No. 40, July 1976), scanned copy of page PC40-13.

Popular Computing (Calabasas, CA), Front cover of issue 35, Vol. 4 (No. 35, Feb 1976), the issue that contained the statement of the problem.

Crossrefs

Sequence in context: A280230 A076042 A231669 * A162208 A161698 A049791

Adjacent sequences: A256983 A256984 A256985 * A256987 A256988 A256989

Keyword

nonn

Author

N. J. A. Sloane, Apr 26 2015

Extensions

More terms from Lars Blomberg, Aug 04 2015

Status

approved