Triangle read by rows: T(n,k) = Sum_{i <= n, j <= k, (i,j) <> (n,k)} T(i,j), starting with T(1,1) = 1, for n >= 1 and 1 <= k <= n.
A192933
Triangle read by rows: T(n,k) = Sum_{i <= n, j <= k, (i,j) <> (n,k)} T(i,j), starting with T(1,1) = 1, for n >= 1 and 1 <= k <= n.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =2a(4) =6a(5) =12a(6) =4a(7) =16a(8) =44a(9) =88a(10) =8a(11) =40a(12) =136a(13) =360a(14) =720a(15) =16a(16) =96a(17) =384a(18) =1216a(19) =3152a(20) =6304a(21) =32a(22) =224a(23) =1024a(24) =3712a(25) =11296a(26) =28896a(27) =57792a(28) =64a(29) =512
External references
- oeis: A192933