Triangle read by rows: A007318^(-1) * A011971.

Terms

a(0) =1a(1) =0a(2) =2a(3) =1a(4) =-1a(5) =5a(6) =1a(7) =4a(8) =-5a(9) =15a(10) =4a(11) =2a(12) =17a(13) =-23a(14) =52a(15) =11a(16) =17a(17) =2a(18) =79a(19) =-109a(20) =203a(21) =41a(22) =46a(23) =80a(24) =-20a(25) =397a(26) =-544a(27) =877a(28) =162a(29) =198