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A166667
Totally multiplicative sequence with a(p) = 9p+1 for prime p.
1
1, 19, 28, 361, 46, 532, 64, 6859, 784, 874, 100, 10108, 118, 1216, 1288, 130321, 154, 14896, 172, 16606, 1792, 1900, 208, 192052, 2116, 2242, 21952, 23104, 262, 24472, 280, 2476099, 2800, 2926, 2944, 283024, 334, 3268, 3304, 315514, 370, 34048, 388
OFFSET
1,2
LINKS
FORMULA
Multiplicative with a(p^e) = (9p+1)^e. If n = Product p(k)^e(k) then a(n) = Product (9*p(k)+1)^e(k).
MATHEMATICA
a[1] = 1; a[n_] := (fi = FactorInteger[n]; Times @@ ((9*fi[[All, 1]] + 1)^fi[[All, 2]])); Table[a[n], {n, 1, 100}] (* G. C. Greubel, May 22 2016 *)
CROSSREFS
Sequence in context: A067452 A123944 A095046 * A121458 A373859 A268488
KEYWORD
nonn,mult
AUTHOR
Jaroslav Krizek, Oct 18 2009
STATUS
approved