A191931 - OEIS

A191931

Ordered sequence of nonnegative differences 4f-g, where f and g are Lucas numbers (A000032 beginning at 1).

0, 1, 3, 5, 8, 9, 10, 11, 12, 13, 15, 17, 21, 24, 25, 26, 27, 33, 37, 40, 41, 43, 54, 61, 65, 68, 69, 71, 87, 98, 105, 109, 112, 113, 115, 141, 159, 170, 177, 181, 184, 185, 187, 228, 257, 275, 286, 293, 297, 300, 301, 303, 369, 416, 445, 463, 474, 481, 485

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OFFSET

1,3

LINKS

Table of n, a(n) for n=1..59.

MATHEMATICA

(See A191929.)

Take[Union[Select[4First[#]-Last[#]&/@Tuples[LucasL[Range[20]], {2}], #>=0&]], 70] (* Harvey P. Dale, Aug 21 2011 *)

CROSSREFS

Cf. A191929, A191930, A191932.

Sequence in context: A298516 A157291 A107820 * A325413 A328066 A064186

Adjacent sequences: A191928 A191929 A191930 * A191932 A191933 A191934

KEYWORD

nonn

AUTHOR

Clark Kimberling, Jun 19 2011

STATUS

approved