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Search: id:A083271
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A083271 a(n) = n*tau[n)]+1. +0
2
2, 5, 7, 13, 11, 25, 15, 33, 28, 41, 23, 73, 27, 57, 61, 81, 35, 109, 39, 121, 85, 89, 47, 193, 76, 105, 109, 169, 59, 241, 63, 193, 133, 137, 141, 325, 75, 153, 157, 321, 83, 337, 87, 265, 271, 185, 95, 481, 148, 301, 205, 313, 107, 433, 221, 449, 229, 233, 119, 721 (list; graph; listen)
OFFSET

1,1

MATHEMATICA

h[x_] := x*DivisorSigma[0, x]]+1 Table[h[w], {w, 1, 100}]

CROSSREFS

Cf. A000005, A083272.

Sequence in context: A041975 A042577 A092792 this_sequence A094285 A121218 A062879

Adjacent sequences: A083268 A083269 A083270 this_sequence A083272 A083273 A083274

KEYWORD

easy,nonn

AUTHOR

Labos E. (labos(AT)ana.sote.hu), May 14 2003

page 1

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Last modified December 10 12:37 EST 2009. Contains 170569 sequences.


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