Triangle read by rows: T(n,k) is the coefficient A_k in the transformation of 1 + x + x^2 + ... + x^n to the polynomial A_k*(x+3)^k for 0 <= k <= n.
A248811
Triangle read by rows: T(n,k) is the coefficient A_k in the transformation of 1 + x + x^2 + ... + x^n to the polynomial A_k*(x+3)^k for 0 <= k <= n.
Terms
- a(0) =1a(1) =-2a(2) =1a(3) =7a(4) =-5a(5) =1a(6) =-20a(7) =22a(8) =-8a(9) =1a(10) =61a(11) =-86a(12) =46a(13) =-11a(14) =1a(15) =-182a(16) =319a(17) =-224a(18) =79a(19) =-14a(20) =1a(21) =547a(22) =-1139a(23) =991a(24) =-461a(25) =121a(26) =-17a(27) =1a(28) =-1640a(29) =3964
External references
- oeis: A248811