Catalan triangle read by rows. Also triangle of expansions of powers of x in terms of Chebyshev polynomials U_n(x).

A008315

Catalan triangle read by rows. Also triangle of expansions of powers of x in terms of Chebyshev polynomials U_n(x).

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =2a(6) =1a(7) =3a(8) =2a(9) =1a(10) =4a(11) =5a(12) =1a(13) =5a(14) =9a(15) =5a(16) =1a(17) =6a(18) =14a(19) =14a(20) =1a(21) =7a(22) =20a(23) =28a(24) =14a(25) =1a(26) =8a(27) =27a(28) =48a(29) =42

External references