Number triangle (1/((1-x)(1-2x)),-x)-(x/((1-x)(1-2x)),-x^2) (expressed in the notation of Riordan arrays).
A115450
Number triangle (1/((1-x)(1-2x)),-x)-(x/((1-x)(1-2x)),-x^2) (expressed in the notation of Riordan arrays).
Terms
- a(0) =1a(1) =2a(2) =-1a(3) =4a(4) =-3a(5) =1a(6) =8a(7) =-6a(8) =3a(9) =-1a(10) =16a(11) =-12a(12) =7a(13) =-3a(14) =1a(15) =32a(16) =-24a(17) =14a(18) =-7a(19) =3a(20) =-1a(21) =64a(22) =-48a(23) =28a(24) =-15a(25) =7a(26) =-3a(27) =1a(28) =128a(29) =-96
External references
- oeis: A115450