OFFSET
1,4
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 1..10000
FORMULA
Additive with a(p^e) = e^p.
MAPLE
A008476 := proc(n) local e, j; e := ifactors(n)[2]:
add (e[j][2]^e[j][1], j=1..nops(e)) end:
seq (A008476(n), n=1..80);
# Peter Luschny, Jan 17 2011
MATHEMATICA
Prepend[ Array[ Plus @@ Map[ Power @@ RotateLeft[ #1, 1 ]&, FactorInteger[ # ] ]&, 100, 2 ], 1 ]
Total[ #2^#1 & @@@ FactorInteger[ # ]] & /@ Range[100] (* Peter Pein (petsie(AT)dordos.net), Dec 21 2007 *)
PROG
(PARI) for(n=1, 110, print1(sum(i=1, omega(n), component(component(factor(n), 2), i)^component(component(factor(n), 1), i)), ", "))
CROSSREFS
KEYWORD
nonn
AUTHOR
EXTENSIONS
More terms from Benoit Cloitre, Jun 07 2002
STATUS
approved