0,2

T. D. Noe, Table of n, a(n) for n = 0..4000 (using data from Flammenkamp)

A. Flammenkamp, First 1200 highly composite numbers

a(0) = 1 because there is 1 highly composite number that has no prime factors; a(9) = 21 because there are 21 highly composite numbers that have 9 distinct prime factors.

Cf. A002182.

Sequence in context: A190120 A069789 A332683 * A198331 A057518 A289206

Adjacent sequences: A086331 A086332 A086333 * A086335 A086336 A086337

nonn,look

Lekraj Beedassy, Sep 01 2003

Corrected and extended by Graeme McRae, Apr 30 2006

approved