Triangle read by rows: T(0,0) = 1; T(n,k) = T(n-1,k) + 10 * T(n-2,k-1) for k = 0..floor(n/2); T(n,k)=0 for n or k < 0.
A317054
Triangle read by rows: T(0,0) = 1; T(n,k) = T(n-1,k) + 10 * T(n-2,k-1) for k = 0..floor(n/2); T(n,k)=0 for n or k < 0.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =10a(4) =1a(5) =20a(6) =1a(7) =30a(8) =100a(9) =1a(10) =40a(11) =300a(12) =1a(13) =50a(14) =600a(15) =1000a(16) =1a(17) =60a(18) =1000a(19) =4000a(20) =1a(21) =70a(22) =1500a(23) =10000a(24) =10000a(25) =1a(26) =80a(27) =2100a(28) =20000a(29) =50000
External references
- oeis: A317054