a(n) = (4/n^2)*( Sum_{k=0..n-1} k*A246459(k) ).
A246513
a(n) = (4/n^2)*( Sum_{k=0..n-1} k*A246459(k) ).
Terms
- a(0) =0a(1) =7a(2) =52a(3) =378a(4) =2832a(5) =21785a(6) =171036a(7) =1364391a(8) =11023264a(9) =89985681a(10) =740894700a(11) =6144227430a(12) =51267563280a(13) =430045297695
External references
- oeis: A246513