1,1

For exactly 9 distinct prime factors, a(1) = 223092870 and a(2) = 5702759516090.

Table of n, a(n) for n=1..3.

Cf. A087977, A087978, A138206, A138207.

Sequence in context: A258363 A147575 A046326 * A058332 A058328 A242806

Adjacent sequences: A154570 A154571 A154572 * A154574 A154575 A154576

bref,nonn

Donovan Johnson, Jan 15 2009

approved