0,2
a(n) = p^n Product (p^n - p^k) for k=0 to n-1
FoldList[ #1*10^#2 (10^#2-1)&, 1, Range[ 20 ] ]
Sequence in context: A066784 A135321 A135428 this_sequence A119656 A033411 A087411
Adjacent sequences: A028669 A028670 A028671 this_sequence A028673 A028674 A028675
nonn
Olivier Gerard (olivier.gerard(AT)gmail.com)
Search completed in 0.005 seconds