Table T(n,k) = sum over all set partitions of n of number at index k.

Terms

a(0) =1a(1) =2a(2) =3a(3) =5a(4) =8a(5) =9a(6) =15a(7) =25a(8) =29a(9) =31a(10) =52a(11) =89a(12) =106a(13) =115a(14) =120a(15) =203a(16) =354a(17) =431a(18) =474a(19) =499a(20) =514a(21) =877a(22) =1551a(23) =1923a(24) =2141a(25) =2273a(26) =2355a(27) =2407a(28) =4140a(29) =7403