Triangle read by rows: T(n,k) = value of the n-th repunit in base (k+1) representation, 1<=k<=n.

Terms

a(0) =1a(1) =3a(2) =4a(3) =7a(4) =13a(5) =21a(6) =15a(7) =40a(8) =85a(9) =156a(10) =31a(11) =121a(12) =341a(13) =781a(14) =1555a(15) =63a(16) =364a(17) =1365a(18) =3906a(19) =9331a(20) =19608a(21) =127a(22) =1093a(23) =5461a(24) =19531a(25) =55987a(26) =137257a(27) =299593a(28) =255a(29) =3280