First differences of A087404: a(n) = A087404(n) - A087404(n-1), a(0) = A087404(0).
A087405
First differences of A087404: a(n) = A087404(n) - A087404(n-1), a(0) = A087404(0).
Terms
- a(0) =2a(1) =2a(2) =22a(3) =98a(4) =502a(5) =2498a(6) =12502a(7) =62498a(8) =312502a(9) =1562498a(10) =7812502a(11) =39062498a(12) =195312502a(13) =976562498a(14) =4882812502a(15) =24414062498a(16) =122070312502a(17) =610351562498
External references
- oeis: A087405