login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A092341 a(0)=1, a(n) = sigma_3(3n). 2
1, 28, 252, 757, 2044, 3528, 6813, 9632, 16380, 20440, 31752, 37296, 55261, 61544, 86688, 95382, 131068, 137592, 183960, 192080, 257544, 260408, 335664, 340704, 442845, 441028, 553896, 551881, 703136, 682920, 858438, 834176, 1048572, 1008324, 1238328, 1213632 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..35.

MATHEMATICA

Join[{1}, DivisorSigma[3, 3*Range[40]]] (* Harvey P. Dale, Feb 02 2012 *)

CROSSREFS

Trisection of A001158. Cf. A045823, A091986, A092342, A092343.

Sequence in context: A085438 A188526 A219600 * A042522 A025517 A222267

Adjacent sequences:  A092338 A092339 A092340 * A092342 A092343 A092344

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Mar 20 2004

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

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