Triangle read by rows: T(n,k) is the number of compositions of n having degree of asymmetry equal to k (n>=0; 0<=k<=n/3).

A275433

Triangle read by rows: T(n,k) is the number of compositions of n having degree of asymmetry equal to k (n>=0; 0<=k<=n/3).

Terms

    a(0) =1a(1) =1a(2) =2a(3) =2a(4) =2a(5) =4a(6) =4a(7) =4a(8) =12a(9) =8a(10) =20a(11) =4a(12) =8a(13) =44a(14) =12a(15) =16a(16) =68a(17) =44a(18) =16a(19) =132a(20) =100a(21) =8a(22) =32a(23) =196a(24) =252a(25) =32a(26) =32a(27) =356a(28) =500a(29) =136

External references