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Search: id:A081867
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A081867 a(n)=sigma_11(2n-1). +0
1
1, 177148, 48828126, 1977326744, 31381236757, 285311670612, 1792160394038, 8649804864648, 34271896307634, 116490258898220, 350279478046112, 952809757913928, 2384185839843751, 5559091947792280, 12200509765705830 (list; graph; listen)
OFFSET

1,2
CROSSREFS

Cf. A013959.

Sequence in context: A017315 A017435 A017567 this_sequence A133972 A056748 A060232

Adjacent sequences: A081864 A081865 A081866 this_sequence A081868 A081869 A081870

KEYWORD

nonn

AUTHOR

Benoit Cloitre (benoit7848c(AT)orange.fr), Apr 12 2003

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Last modified December 19 12:50 EST 2009. Contains 171053 sequences.

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