Limiting reverse row of the array A274196.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =2a(6) =2a(7) =3a(8) =4a(9) =4a(10) =5a(11) =7a(12) =8a(13) =9a(14) =12a(15) =15a(16) =17a(17) =21a(18) =27a(19) =32a(20) =37a(21) =47a(22) =58a(23) =68a(24) =82a(25) =103a(26) =124a(27) =147a(28) =181a(29) =223