Triangle T(n, k) = S(n, k) + S(n, n-k), where S are the Stirling numbers (A048993) of the second kind, read by rows.

A154844

Triangle T(n, k) = S(n, k) + S(n, n-k), where S are the Stirling numbers (A048993) of the second kind, read by rows.

Terms

    a(0) =2a(1) =1a(2) =1a(3) =1a(4) =2a(5) =1a(6) =1a(7) =4a(8) =4a(9) =1a(10) =1a(11) =7a(12) =14a(13) =7a(14) =1a(15) =1a(16) =11a(17) =40a(18) =40a(19) =11a(20) =1a(21) =1a(22) =16a(23) =96a(24) =180a(25) =96a(26) =16a(27) =1a(28) =1a(29) =22

External references