A056148 a(0) = 1, a(n) = number of a(k), for 0 <= k <= n-1, that divide n.

1, 1, 2, 2, 4, 2, 5, 2, 7, 2, 8, 2, 9, 2, 10, 3, 11, 2, 12, 2, 14, 4, 12, 2, 18, 3, 12, 5, 16, 2, 18, 2, 18, 5, 14, 6, 26, 2, 15, 4, 23, 2, 22, 2, 22, 9, 18, 2, 29, 3, 22, 5, 22, 2, 29, 7, 27, 5, 21, 2, 37, 2, 21, 11, 26, 7, 31, 2, 25, 6, 33, 2, 41, 2, 25, 13, 27, 7, 32, 2, 36, 9, 26, 2, 45

Offset

0,3

Links

Table of n, a(n) for n=0..84.

Example

a(6) = 5 because a(0), a(1), a(2), a(3) and a(5) divide 6.

Crossrefs

Sequence in context: A140773 A133911 A069932 * A304442 A057567 A353845

Adjacent sequences: A056145 A056146 A056147 * A056149 A056150 A056151

Keyword

easy,nonn

Author

Leroy Quet, Aug 04 2000

Status

approved