login
A258646
Sixth arithmetic derivative of n.
3
0, 0, 0, 0, 4, 0, 0, 0, 368, 0, 0, 0, 752, 0, 0, 176, 1520, 0, 0, 0, 608, 0, 0, 0, 1552, 0, 80, 27, 1520, 0, 0, 0, 3424, 0, 0, 368, 1312, 0, 0, 752, 288, 0, 0, 0, 3120, 368, 0, 0, 8144, 0, 176, 240, 1312, 0, 2484, 752, 3312, 0, 0, 0, 3312, 0, 1, 112, 245760, 0
OFFSET
0,5
LINKS
FORMULA
a(n) = A003415^6(n).
MAPLE
d:= n-> n*add(i[2]/i[1], i=ifactors(n)[2]):
A:= proc(n, k) option remember; `if`(k=0, n, d(A(n, k-1))) end:
a:= n-> A(n, 6):
seq(a(n), n=0..70);
CROSSREFS
Column k=6 of A258651.
Cf. A003415.
Sequence in context: A258645 A222953 A101193 * A258647 A013334 A258648
KEYWORD
nonn
AUTHOR
Alois P. Heinz, Jun 06 2015
STATUS
approved