1,2
Length of edges of a square spiral related with prime numbers.
Cf. A000040, A160790, A160791, A190792.
Sequence in context: A152991 A163298 A133440 this_sequence A006800 A147524 A113177
Adjacent sequences: A160790 A160791 A160792 this_sequence A160794 A160795 A160796
easy,more,nonn
Omar E. Pol (info(AT)polprimos.com), May 29 2009
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