Digital representation of m contains only either 1's or 2's (but not both 1's and 2's) and 0's, is palindromic and contains no singleton 2's, 1's or 0's.

A061852

Digital representation of m contains only either 1's or 2's (but not both 1's and 2's) and 0's, is palindromic and contains no singleton 2's, 1's or 0's.

Terms

    a(0) =11a(1) =22a(2) =111a(3) =222a(4) =1111a(5) =2222a(6) =11111a(7) =22222a(8) =110011a(9) =111111a(10) =220022a(11) =222222a(12) =1100011a(13) =1111111a(14) =2200022a(15) =2222222a(16) =11000011a(17) =11100111a(18) =11111111a(19) =22000022a(20) =22200222a(21) =22222222a(22) =110000011a(23) =111000111a(24) =111111111a(25) =220000022a(26) =222000222

External references