Concatenation of the numbers of equal successive digits of previous two terms read in inverse order, starting with a(1)=a(2)=1.

A113721

Concatenation of the numbers of equal successive digits of previous two terms read in inverse order, starting with a(1)=a(2)=1.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =11a(4) =21a(5) =112a(6) =131a(7) =11112a(8) =1511a(9) =21114a(10) =131211a(11) =21111131a(12) =115121111a(13) =41113151a(14) =11113141112a(15) =13111511131

External references