1,3
Length of the nth edge of a square spiral related to Fibonacci numbers and prime numbers.
Cf. A000040, A000045, A160791, A160793, A160794.
Sequence in context: A105354 A094077 A091018 this_sequence A113320 A092401 A116626
Adjacent sequences: A160792 A160793 A160794 this_sequence A160796 A160797 A160798
easy,more,nonn
Omar E. Pol (info(AT)polprimos.com), May 29 2009
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