a(n) = Sum_{k=0..m} (k+1) * A026148(n, k), where m=0 for n=1; m=n+1 for n >= 2.
A027333
a(n) = Sum_{k=0..m} (k+1) * A026148(n, k), where m=0 for n=1; m=n+1 for n >= 2.
Terms
- a(0) =1a(1) =3a(2) =18a(3) =65a(4) =230a(5) =783a(6) =2612a(7) =8573a(8) =27810a(9) =89386a(10) =285214a(11) =904671a(12) =2855438a(13) =8975432a(14) =28112778a(15) =87786759a(16) =273402138a(17) =849498192a(18) =2634067338a(19) =8152533735a(20) =25190812134a(21) =77722369419a(22) =239477564892a(23) =736972233435
External references
- oeis: A027333