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A258648
Eighth arithmetic derivative of n.
3
0, 0, 0, 0, 4, 0, 0, 0, 1520, 0, 0, 0, 3424, 0, 0, 752, 8592, 0, 0, 0, 3120, 0, 0, 0, 8144, 0, 368, 27, 8592, 0, 0, 0, 20096, 0, 0, 1520, 8976, 0, 0, 3424, 2176, 0, 0, 0, 16304, 1520, 0, 0, 32624, 0, 752, 1552, 8976, 0, 10260, 3424, 22288, 0, 0, 0, 22288, 0, 0
OFFSET
0,5
LINKS
FORMULA
a(n) = A003415^8(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, 8):
seq(a(n), n=0..70);
CROSSREFS
Column k=8 of A258651.
Cf. A003415.
Sequence in context: A258646 A258647 A013334 * A185232 A258649 A258650
KEYWORD
nonn
AUTHOR
Alois P. Heinz, Jun 06 2015
STATUS
approved