A138394 Smallest number with a(n) divisors is in A134865.

1, 2, 3, 4, 6, 8, 9, 10, 16, 20, 24, 30, 48, 60, 64, 72, 80, 84, 100, 108, 126, 162, 189, 192, 224, 384, 448, 512, 576, 672, 11520

Offset

1,2

Comments

The indices of elements of A005179 that belong to A134865. Sorted version of the sequence A140752. - Max Alekseyev, May 26 2008

Links

Table of n, a(n) for n=1..31.

Formula

a(n) = A000005(A140753(n)) - Max Alekseyev, May 26 2008

Example

8 is in this sequence because the smallest number with 8 divisors (24) is a member of A134865.

Crossrefs

Cf. A000005, A005179, A134865, A140752, A140753.

Sequence in context: A080823 A117925 A135571 * A140752 A246780 A321131

Adjacent sequences: A138391 A138392 A138393 * A138395 A138396 A138397

Keyword

more,nonn

Author

J. Lowell, May 08 2008

Extensions

a(31)=11520 from Ray Chandler, Jun 30 2008

Status

approved