Triangular array T read by rows: T(n,k)=t(n,2k), t given by A027926; 0 <= k <= n, n >= 0.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =1a(6) =1a(7) =2a(8) =4a(9) =1a(10) =1a(11) =2a(12) =5a(13) =7a(14) =1a(15) =1a(16) =2a(17) =5a(18) =12a(19) =11a(20) =1a(21) =1a(22) =2a(23) =5a(24) =13a(25) =26a(26) =16a(27) =1a(28) =1a(29) =2