0,2
a(n) = p^n Product (p^n - p^k) for k=0 to n-1
FoldList[ #1*15^#2 (15^#2-1)&, 1, Range[ 20 ] ]
Sequence in context: A136350 A068297 A196887 * A114442 A037272 A013530
Adjacent sequences: A028674 A028675 A028676 * A028678 A028679 A028680
nonn
Olivier Gerard (olivier.gerard(AT)gmail.com)