Square array read by antidiagonals of n written in base k (n,k>0).

Terms

a(0) =1a(1) =1a(2) =11a(3) =1a(4) =10a(5) =111a(6) =1a(7) =2a(8) =11a(9) =1111a(10) =1a(11) =2a(12) =10a(13) =100a(14) =11111a(15) =1a(16) =2a(17) =3a(18) =11a(19) =101a(20) =111111a(21) =1a(22) =2a(23) =3a(24) =10a(25) =12a(26) =110a(27) =1111111a(28) =1a(29) =2