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A067749
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Numbers k such that k and 3^k end with the same two digits.
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0
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87, 187, 287, 387, 487, 587, 687, 787, 887, 987, 1087, 1187, 1287, 1387, 1487, 1587, 1687, 1787, 1887, 1987, 2087, 2187, 2287, 2387, 2487, 2587, 2687, 2787, 2887, 2987, 3087, 3187, 3287, 3387, 3487, 3587, 3687, 3787, 3887, 3987, 4087, 4187, 4287, 4387
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OFFSET
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1,1
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LINKS
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FORMULA
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a(n) = 100*n - 13.
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MATHEMATICA
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100*Range[50]-13 (* or *) LinearRecurrence[{2, -1}, {87, 187}, 50] (* Harvey P. Dale, Jul 18 2016 *)
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PROG
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CROSSREFS
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KEYWORD
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nonn,base,easy
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AUTHOR
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STATUS
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approved
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