Numbers k such that the k-th composition in standard order is a concatenation of distinct twins (x,x).

A351009

Numbers k such that the k-th composition in standard order is a concatenation of distinct twins (x,x).

Terms

    a(0) =0a(1) =3a(2) =10a(3) =36a(4) =43a(5) =58a(6) =136a(7) =147a(8) =228a(9) =528a(10) =547a(11) =586a(12) =676a(13) =904a(14) =2080a(15) =2115a(16) =2186a(17) =2347a(18) =2362a(19) =2696a(20) =2707a(21) =2788a(22) =3600a(23) =3658a(24) =3748a(25) =8256a(26) =8323a(27) =8458a(28) =8740a(29) =8747

External references