Binomial matrix (1,10^n) read by antidiagonals.

Terms

a(0) =1a(1) =1a(2) =10a(3) =1a(4) =11a(5) =100a(6) =1a(7) =12a(8) =110a(9) =1000a(10) =1a(11) =13a(12) =121a(13) =1100a(14) =10000a(15) =1a(16) =14a(17) =133a(18) =1210a(19) =11000a(20) =100000a(21) =1a(22) =15a(23) =146a(24) =1331a(25) =12100a(26) =110000a(27) =1000000a(28) =1a(29) =16