a(n) = A(n,n) where A(1,n) = A(n,1) = prime(n+1) and A(m,n) = A(m-1,n) + A(m,n-1) + A(m-1,n-1) for m > 1 and n > 1.

A350519

a(n) = A(n,n) where A(1,n) = A(n,1) = prime(n+1) and A(m,n) = A(m-1,n) + A(m,n-1) + A(m-1,n-1) for m > 1 and n > 1.

Terms

    a(0) =3a(1) =13a(2) =63a(3) =325a(4) =1719a(5) =9237a(6) =50199a(7) =275149a(8) =1518263a(9) =8422961a(10) =46935819a(11) =262512929a(12) =1472854451a(13) =8285893713a(14) =46723439019a(15) =264009961733

External references