Triangle read by rows: T(n,k) (1 <= k <= n) = Steffensen's bracket function [n,n-k].

Terms

a(0) =1a(1) =1a(2) =2a(3) =1a(4) =5a(5) =6a(6) =1a(7) =9a(8) =25a(9) =26a(10) =1a(11) =14a(12) =67a(13) =149a(14) =150a(15) =1a(16) =20a(17) =145a(18) =525a(19) =1081a(20) =1082a(21) =1a(22) =27a(23) =275a(24) =1450a(25) =4651a(26) =9365a(27) =9366a(28) =1a(29) =35