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A083728 a(0) = 1, a(n) = 480*sigma(n). 2
1, 480, 1440, 1920, 3360, 2880, 5760, 3840, 7200, 6240, 8640, 5760, 13440, 6720, 11520, 11520, 14880, 8640, 18720, 9600, 20160, 15360, 17280, 11520, 28800, 14880, 20160, 19200, 26880, 14400, 34560, 15360, 30240, 23040, 25920, 23040, 43680, 18240, 28800 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Antti Karttunen, Table of n, a(n) for n = 0..10000

Index entries for sequences related to sigma(n)

MATHEMATICA

{1}~Join~Array[480 DivisorSigma[1, #] &, 38] (* Michael De Vlieger, Nov 16 2017 *)

PROG

(PARI) A083728(n) = if(0==n, 1, 480*sigma(n)); \\ Antti Karttunen, Nov 16 2017

CROSSREFS

Cf. A000203, A004009, A008410.

Sequence in context: A293187 A206200 A258558 * A199808 A253401 A327944

Adjacent sequences:  A083725 A083726 A083727 * A083729 A083730 A083731

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Jun 16 2003

STATUS

approved

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Last modified September 23 20:42 EDT 2021. Contains 347617 sequences. (Running on oeis4.)