0,7

A minimal number is the smallest number with a given number of divisors, see A007416;

a(2*n) = a(2*n+1) = A099386(n).

Table of n, a(n) for n=0..96.

a(18) = #{16+2, 12+6, 12+4+2} = 3.

Cf. A099383, A000009, A007416, A005179.

Sequence in context: A088018 A204909 A214211 * A015716 A308884 A101598

Adjacent sequences: A099381 A099382 A099383 * A099385 A099386 A099387

nonn

Reinhard Zumkeller, Oct 14 2004

approved