login
A258645
Fifth arithmetic derivative of n.
3
0, 0, 0, 0, 4, 0, 0, 0, 176, 0, 0, 0, 368, 0, 0, 80, 752, 0, 0, 0, 240, 0, 0, 0, 608, 0, 32, 27, 752, 0, 0, 0, 1520, 1, 0, 176, 560, 0, 0, 368, 284, 0, 0, 0, 1552, 176, 0, 0, 3120, 1, 80, 112, 560, 0, 1188, 368, 1312, 0, 0, 0, 1312, 0, 5, 48, 36864, 1, 0, 0
OFFSET
0,5
LINKS
FORMULA
a(n) = A003415^5(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, 5):
seq(a(n), n=0..70);
CROSSREFS
Column k=5 of A258651.
Cf. A003415.
Sequence in context: A169770 A287633 A222931 * A222953 A101193 A258646
KEYWORD
nonn
AUTHOR
Alois P. Heinz, Jun 06 2015
STATUS
approved