To concatenate all terms, to concatenate the odd rank terms or to concatenate the even rank terms produces the same result.

A299823

To concatenate all terms, to concatenate the odd rank terms or to concatenate the even rank terms produces the same result.

Terms

    a(0) =12a(1) =121a(2) =1a(3) =2a(4) =21a(5) =11a(6) =122a(7) =22a(8) =111a(9) =1111a(10) =1222a(11) =222a(12) =211a(13) =2111a(14) =11111a(15) =111112a(16) =12222a(17) =2222a(18) =2221a(19) =221a(20) =1211a(21) =12111a(22) =111111a(23) =1111111a(24) =1111121a(25) =1112a(26) =22222a(27) =122222a(28) =222222a(29) =2222221

External references