1,1

a(1)= 3 = 3

a(2)= 3*13 = 39

a(3)= 3*13*23 = 897

a(4)= 3*13*23*43 = 38571

Sequence in context: A104209 A121247 A064732 this_sequence A082159 A084881 A015017

Adjacent sequences: A092607 A092608 A092609 this_sequence A092611 A092612 A092613

nonn

Jorge Coveiro (jorgecoveiro(AT)yahoo.com), Apr 11 2004