Triangle read by rows: A008277 * A007318.

Terms

a(0) =1a(1) =2a(2) =1a(3) =5a(4) =5a(5) =1a(6) =15a(7) =22a(8) =9a(9) =1a(10) =52a(11) =99a(12) =61a(13) =14a(14) =1a(15) =203a(16) =471a(17) =385a(18) =135a(19) =20a(20) =1a(21) =877a(22) =2386a(23) =2416a(24) =1140a(25) =260a(26) =27a(27) =1a(28) =4140a(29) =12867