Triangle in A059037 read by rows in natural order.

Terms

a(0) =1a(1) =1a(2) =2a(3) =1a(4) =5a(5) =7a(6) =1a(7) =17a(8) =27a(9) =31a(10) =1a(11) =69a(12) =130a(13) =164a(14) =174a(15) =1a(16) =373a(17) =729a(18) =1020a(19) =1158a(20) =1194a(21) =1a(22) =2491a(23) =4961a(24) =7166a(25) =8798a(26) =9544a(27) =9729a(28) =1a(29) =20020