Triangle read by rows: T(n,k) is the number of bargraphs of semiperimeter n having k L-shaped corners (n>=2, k>=0).

A273717

Triangle read by rows: T(n,k) is the number of bargraphs of semiperimeter n having k L-shaped corners (n>=2, k>=0).

Terms

    a(0) =1a(1) =2a(2) =4a(3) =1a(4) =8a(5) =5a(6) =16a(7) =18a(8) =1a(9) =32a(10) =56a(11) =9a(12) =64a(13) =160a(14) =50a(15) =1a(16) =128a(17) =432a(18) =220a(19) =14a(20) =256a(21) =1120a(22) =840a(23) =110a(24) =1a(25) =512a(26) =2816a(27) =2912a(28) =645a(29) =20

External references