Regular triangle read by rows, T(n,k) = T(n,k-1)+2*T(n-1,k)-T(n-1,k-1) for 1<=k<=n-2 with T(n,n)=T(n,n-1)=T(n,n-2) for n>=3 and T(1,1)=T(2,1)=T(2,2)=1.
A341695
Regular triangle read by rows, T(n,k) = T(n,k-1)+2*T(n-1,k)-T(n-1,k-1) for 1<=k<=n-2 with T(n,n)=T(n,n-1)=T(n,n-2) for n>=3 and T(1,1)=T(2,1)=T(2,2)=1.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =2a(4) =2a(5) =2a(6) =4a(7) =6a(8) =6a(9) =6a(10) =8a(11) =16a(12) =22a(13) =22a(14) =22a(15) =16a(16) =40a(17) =68a(18) =90a(19) =90a(20) =90a(21) =32a(22) =96a(23) =192a(24) =304a(25) =394a(26) =394a(27) =394a(28) =64a(29) =224
External references
- oeis: A341695