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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).
3
26, 42, 59, 75, 91, 107, 123, 139, 139, 139, 27, 43, 58, 74, 90, 106, 122, 138
OFFSET
1,1
COMMENTS
See the periodic table of the elements with 18 columns in A138723 and A138724. See A138718 for more information.
CROSSREFS
KEYWORD
easy,fini,full,nonn
AUTHOR
Omar E. Pol, Apr 16 2008
STATUS
approved