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 have i colors in (weakly) increasing order.
A327847
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 have i colors in (weakly) increasing order.
Terms
- a(0) =0a(1) =0a(2) =3a(3) =10a(4) =39a(5) =100a(6) =303a(7) =782a(8) =2009a(9) =5388a(10) =12839a(11) =32658a(12) =79673a(13) =191500a(14) =459745a(15) =1090622a(16) =2569597a(17) =5932304a(18) =13906405a(19) =31740090a(20) =72160311a(21) =164296384a(22) =369673125a(23) =827781598a(24) =1834885695a(25) =4076433368a(26) =8966677703a(27) =19639987986a(28) =42751905899a(29) =92703023676
External references
- oeis: A327847