First subdiagonal of triangular array T: T(j,1) = 1 for ((j-1) mod 8) < 4, else 0; T(j,k) = T(j-1,k-1) + T(j,k-1) for 2 <= k <= j.

A131075

First subdiagonal of triangular array T: T(j,1) = 1 for ((j-1) mod 8) < 4, else 0; T(j,k) = T(j-1,k-1) + T(j,k-1) for 2 <= k <= j.

Terms

    a(0) =1a(1) =2a(2) =4a(3) =7a(4) =11a(5) =16a(6) =22a(7) =30a(8) =46a(9) =92a(10) =232a(11) =628a(12) =1652a(13) =4096a(14) =9544a(15) =21000a(16) =43912a(17) =87824a(18) =169120a(19) =315952a(20) =578096a(21) =1048576a(22) =1913440a(23) =3567072a(24) =6874336a(25) =13748672a(26) =28384384a(27) =59797312a(28) =126906176a(29) =268435456

External references