Triangle T(n,m) = 2+A176697(n)-A176697(m)-A176697(n-m) read along rows 0<=m<=n.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =3a(5) =1a(6) =1a(7) =5a(8) =5a(9) =1a(10) =1a(11) =14a(12) =16a(13) =14a(14) =1a(15) =1a(16) =44a(17) =55a(18) =55a(19) =44a(20) =1a(21) =1a(22) =146a(23) =187a(24) =196a(25) =187a(26) =146a(27) =1a(28) =1a(29) =504