The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A166664 Totally multiplicative sequence with a(p) = 6p+1 for prime p. 1
 1, 13, 19, 169, 31, 247, 43, 2197, 361, 403, 67, 3211, 79, 559, 589, 28561, 103, 4693, 115, 5239, 817, 871, 139, 41743, 961, 1027, 6859, 7267, 175, 7657, 187, 371293, 1273, 1339, 1333, 61009, 223, 1495, 1501, 68107, 247, 10621, 259, 11323, 11191, 1807, 283 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS G. C. Greubel, Table of n, a(n) for n = 1..10000 FORMULA Multiplicative with a(p^e) = (6p+1)^e. If n = Product p(k)^e(k) then a(n) = Product (6*p(k)+1)^e(k). MATHEMATICA a[1] = 1; a[n_] := (fi = FactorInteger[n]; Times @@ ((6*fi[[All, 1]] + 1)^fi[[All, 2]])); Table[a[n], {n, 1, 100}] (* G. C. Greubel, May 22 2016 *) CROSSREFS Sequence in context: A090258 A241246 A153266 * A147393 A088187 A146047 Adjacent sequences: A166661 A166662 A166663 * A166665 A166666 A166667 KEYWORD nonn,mult AUTHOR Jaroslav Krizek, Oct 18 2009 STATUS approved

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

Last modified May 29 12:09 EDT 2023. Contains 363042 sequences. (Running on oeis4.)