Triangle read by rows: T(n,k) is the number of ternary words of length n having degree of asymmetry equal to k (n>=0; 0<=k<=n/2).

A274498

Triangle read by rows: T(n,k) is the number of ternary words of length n having degree of asymmetry equal to k (n>=0; 0<=k<=n/2).

Terms

    a(0) =1a(1) =3a(2) =3a(3) =6a(4) =9a(5) =18a(6) =9a(7) =36a(8) =36a(9) =27a(10) =108a(11) =108a(12) =27a(13) =162a(14) =324a(15) =216a(16) =81a(17) =486a(18) =972a(19) =648a(20) =81a(21) =648a(22) =1944a(23) =2592a(24) =1296a(25) =243a(26) =1944a(27) =5832a(28) =7776a(29) =3888

External references