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).

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

Offset: 1

Author

Omar E. Pol, Apr 16 2008

Keywords

• easy
• fini
• full
• nonn

Comments

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

Crossrefs

Cf. A138718, A138723, A138724.