1,1
a(1)= 11 = 11
a(2)= 11*31 = 341
a(3)= 11*31*41= 13981
a(4)= 11*31*41*61= 852841
Sequence in context: A107441 A086923 A106717 this_sequence A091537 A033517 A158788
Adjacent sequences: A092606 A092607 A092608 this_sequence A092610 A092611 A092612
nonn
Jorge Coveiro (jorgecoveiro(AT)yahoo.com), Apr 11 2004
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