|
|
A129283
|
|
(Arithmetic derivative of n) + n.
|
|
30
|
|
|
0, 1, 3, 4, 8, 6, 11, 8, 20, 15, 17, 12, 28, 14, 23, 23, 48, 18, 39, 20, 44, 31, 35, 24, 68, 35, 41, 54, 60, 30, 61, 32, 112, 47, 53, 47, 96, 38, 59, 55, 108, 42, 83, 44, 92, 84, 71, 48, 160, 63, 95, 71, 108, 54, 135, 71, 148, 79, 89, 60, 152, 62, 95, 114, 256, 83, 127, 68
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
0,3
|
|
COMMENTS
|
|
|
LINKS
|
|
|
FORMULA
|
|
|
MAPLE
|
end proc:
|
|
MATHEMATICA
|
ad[n_] := Switch[n, 0|1, 0, _?PrimeQ, 1, _, Sum[Module[{p, e}, {p, e} = pe; n*e/p], {pe, FactorInteger[n]}]];
a[n_] := ad[n] + n;
|
|
PROG
|
(Haskell)
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|