0,4
a(n)=A000045(n)*A004091(n).
403=13*31
Cf. A000045, A004091, A061205, A133019.
Sequence in context: A032127 A007598 A121648 this_sequence A028400 A117678 A167045
Adjacent sequences: A133019 A133020 A133021 this_sequence A133023 A133024 A133025
base,easy,nonn
Omar E. Pol (info(AT)polprimos.com), Nov 07 2007
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