Triangle read by rows: T(n,k) is the number of 2-compositions of n having largest entry k (1<=k<=n).
A181338
Triangle read by rows: T(n,k) is the number of 2-compositions of n having largest entry k (1<=k<=n).
Terms
- a(0) =2a(1) =5a(2) =2a(3) =12a(4) =10a(5) =2a(6) =29a(7) =41a(8) =10a(9) =2a(10) =70a(11) =152a(12) =46a(13) =10a(14) =2a(15) =169a(16) =536a(17) =193a(18) =46a(19) =10a(20) =2a(21) =408a(22) =1830a(23) =770a(24) =198a(25) =46a(26) =10a(27) =2a(28) =985a(29) =6120
External references
- oeis: A181338