login
A086300
Arithmetic derivative of 7-smooth numbers.
0
0, 1, 1, 4, 1, 5, 1, 12, 6, 7, 16, 9, 8, 32, 21, 24, 10, 44, 10, 27, 32, 31, 80, 12, 60, 68, 41, 39, 112, 14, 45, 81, 92, 92, 51, 192, 59, 156, 55, 176, 108, 124, 123, 272, 77, 140, 71, 216, 240, 244, 75, 165, 448, 162, 188, 384, 91, 185, 432, 297, 332, 95, 336
OFFSET
1,4
COMMENTS
a(n) = A003415(A002473(n)).
CROSSREFS
Sequence in context: A328099 A003415 A302055 * A028271 A168066 A029666
KEYWORD
nonn
AUTHOR
Reinhard Zumkeller, Jul 15 2003
STATUS
approved