Start to read the sequence digit by digit and erase the first "1" you encounter, then the first "2", the first "3", etc., until the first "9"; go on from there and erase again the first "1", the first "2", etc., until "9" -- and so on, cyclically until the end of the (infinite) sequence. Concatenate what is left. The result is the concatenation of all integers of the sequence.
A108709
Start to read the sequence digit by digit and erase the first "1" you encounter, then the first "2", the first "3", etc., until the first "9"; go on from there and erase again the first "1", the first "2", etc., until "9" -- and so on, cyclically until the end of the (infinite) sequence. Concatenate what is left. The result is the concatenation of all integers of the sequence.
Terms
- a(0) =1a(1) =12a(2) =13a(3) =24a(4) =153a(5) =627a(6) =4819a(7) =5132a(8) =6324a(9) =7546a(10) =8789a(11) =9511a(12) =23324a(13) =65362a(14) =74879a(15) =514263a(16) =847516a(17) =879899a(18) =5111213a(19) =24353627a(20) =48695132a(21) =63247546a(22) =87789951a(23) =124324653a(24) =687487951a(25) =1263847596a(26) =8798995112a(27) =13241536274a(28) =83951326324
External references
- oeis: A108709