Array read by downward antidiagonals: A(n,k) = (k+2)*A(n-1,k+1) + Sum_{j=0..k} A(n-1,j) with A(0,k) = 1, n >= 0, k >= 0.
A370380
Array read by downward antidiagonals: A(n,k) = (k+2)*A(n-1,k+1) + Sum_{j=0..k} A(n-1,j) with A(0,k) = 1, n >= 0, k >= 0.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =1a(4) =5a(5) =13a(6) =1a(7) =7a(8) =29a(9) =71a(10) =1a(11) =9a(12) =51a(13) =195a(14) =461a(15) =1a(16) =11a(17) =79a(18) =409a(19) =1493a(20) =3447a(21) =1a(22) =13a(23) =113a(24) =737a(25) =3623a(26) =12823a(27) =29093a(28) =1a(29) =15
External references
- oeis: A370380