A138727 - OEIS

A138727

Numbers n whose hexadecimal representation is the n-th member of the alphanumeric sequence: 1A, 2A, 3B, 4B, 5B, 6B, 7B, 8B, 8B, 8B, 1B, 2B, 3A, 4A, 5A, 6A, 7A, 8A. (A notation convention of the groups in the periodic table of the elements with 18 columns).

%I #2 Mar 30 2012 17:33:54

%S 26,42,59,75,91,107,123,139,139,139,27,43,58,74,90,106,122,138

%N Numbers n whose hexadecimal representation is the n-th member of the alphanumeric sequence: 1A, 2A, 3B, 4B, 5B, 6B, 7B, 8B, 8B, 8B, 1B, 2B, 3A, 4A, 5A, 6A, 7A, 8A. (A notation convention of the groups in the periodic table of the elements with 18 columns).

%C See the periodic table of the elements with 18 columns in A138723 and A138724. See A138718 for more information.

%Y Cf. A138718, A138723, A138724.

%K easy,fini,full,nonn

%O 1,1

%A _Omar E. Pol_, Apr 16 2008