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Search: id:A152771
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A152771 a(n) = sigma(n) - 2*d(n) + 1. +0
3
0, 0, 1, 2, 3, 5, 5, 8, 8, 11, 9, 17, 11, 17, 17, 22, 15, 28, 17, 31, 25, 29, 21, 45, 26, 35, 33, 45, 27, 57, 29, 52, 41, 47, 41, 74, 35, 53, 49, 75, 39, 81, 41, 73, 67, 65, 45, 105, 52, 82, 65, 87, 51, 105, 65, 105, 73, 83, 57, 145 (list; graph; listen)
OFFSET

1,4

CROSSREFS

Cf. A000005, A000203, A152770, A152772.

Sequence in context: A166250 A067284 A123339 this_sequence A135635 A006447 A014237

Adjacent sequences: A152768 A152769 A152770 this_sequence A152772 A152773 A152774

KEYWORD

easy,nonn

AUTHOR

Omar E. Pol (info(AT)polprimos.com), Dec 14 2008

page 1

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.


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