Triangle read by rows: T(n,k) = (-1)^k*3^(n-1-2k)*binomial(n-k,k)*(4n-5k)/(n-k) (0 <= k <= floor(n/2), n >= 1).
A104063
Triangle read by rows: T(n,k) = (-1)^k*3^(n-1-2k)*binomial(n-k,k)*(4n-5k)/(n-k) (0 <= k <= floor(n/2), n >= 1).
Terms
- a(0) =1a(1) =4a(2) =12a(3) =-1a(4) =36a(5) =-7a(6) =108a(7) =-33a(8) =1a(9) =324a(10) =-135a(11) =10a(12) =972a(13) =-513a(14) =63a(15) =-1a(16) =2916a(17) =-1863a(18) =324a(19) =-13a(20) =8748a(21) =-6561a(22) =1485a(23) =-102a(24) =1a(25) =26244a(26) =-22599a(27) =6318a(28) =-630a(29) =16
External references
- oeis: A104063