Array a(n,m) = ((n+2)/2)^m*Sum_{k=1..n+1} 1/sin(k*Pi/(n+2))^(2m), n>=0, k>=0, read by ascending antidiagonals.
A247239
Array a(n,m) = ((n+2)/2)^m*Sum_{k=1..n+1} 1/sin(k*Pi/(n+2))^(2m), n>=0, k>=0, read by ascending antidiagonals.
Terms
- a(0) =1a(1) =2a(2) =1a(3) =3a(4) =4a(5) =1a(6) =4a(7) =10a(8) =8a(9) =1a(10) =5a(11) =20a(12) =36a(13) =16a(14) =1a(15) =6a(16) =35a(17) =120a(18) =136a(19) =32a(20) =1a(21) =7a(22) =56a(23) =329a(24) =800a(25) =528a(26) =64a(27) =1a(28) =8a(29) =84
External references
- oeis: A247239