Irregular triangle read by rows: row n (n > 0) is the expansion of Sum_{m=1..n} A001263(n,m)*x^(m - 1)*(1 - x)^(n - m).
A174128
Irregular triangle read by rows: row n (n > 0) is the expansion of Sum_{m=1..n} A001263(n,m)*x^(m - 1)*(1 - x)^(n - m).
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =-1a(5) =1a(6) =3a(7) =-3a(8) =1a(9) =6a(10) =-4a(11) =-4a(12) =2a(13) =1a(14) =10a(15) =0a(16) =-20a(17) =10a(18) =1a(19) =15a(20) =15a(21) =-55a(22) =15a(23) =15a(24) =-5a(25) =1a(26) =21a(27) =49a(28) =-105a(29) =-35
External references
- oeis: A174128