1,1

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

Cf. A087977, A087978, A138206, A138207.

Sequence in context: A123322 A147575 A046326 this_sequence A058332 A058328 A016822

Adjacent sequences: A154570 A154571 A154572 this_sequence A154574 A154575 A154576

bref,nonn

Donovan Johnson (donovan.johnson(AT)yahoo.com), Jan 15 2009