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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
OFFSET
1,2
LINKS
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
KEYWORD
nonn,mult
AUTHOR
Jaroslav Krizek, Oct 18 2009
STATUS
approved