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A091678
In base 4, numbers n of the form k + reverse(k) for at least one k.
2
0, 2, 4, 5, 6, 10, 15, 17, 20, 25, 30, 33, 34, 41, 42, 50, 51, 58, 59, 65, 67, 68, 75, 76, 84, 85, 92, 93, 101, 102, 105, 109, 110, 118, 125, 126, 130, 145, 150, 165, 170, 185, 190, 195, 210, 215, 230, 235, 250, 255, 257, 260, 275, 280, 289, 295, 300, 315, 320, 321
OFFSET
0,2
COMMENTS
Base-4 analog of A067030. Complement of A091679.
EXAMPLE
25 is a term since 25 (decimal) = 121 = 110 + 011 = 20 (decimal) + 5 (decimal).
CROSSREFS
KEYWORD
base,easy,nonn
AUTHOR
Klaus Brockhaus, Jan 28 2004
STATUS
approved