Number of colored compositions of n using all colors of a 2-set such that all parts have different color patterns and the patterns for parts i are sorted and have i colors in (weakly) increasing order.

A327841

Number of colored compositions of n using all colors of a 2-set such that all parts have different color patterns and the patterns for parts i are sorted and have i colors in (weakly) increasing order.

Terms

    a(0) =0a(1) =0a(2) =2a(3) =10a(4) =27a(5) =70a(6) =223a(7) =508a(8) =1193a(9) =2822a(10) =7048a(11) =15690a(12) =35072a(13) =79018a(14) =167667a(15) =382976a(16) =823599a(17) =1742082a(18) =3765187a(19) =7785290a(20) =16299074a(21) =34337380a(22) =70503188a(23) =143916326a(24) =296390373a(25) =597048414a(26) =1202172962a(27) =2416614660a(28) =4813022691a(29) =9551780272

External references