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A269992
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Decimal expansion of Sum_{n>=1} 2^(1-n)/L(n), where L = A000032 (Lucas numbers).
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3
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1, 2, 5, 5, 2, 2, 1, 1, 3, 4, 3, 2, 9, 8, 4, 8, 6, 0, 3, 1, 4, 0, 2, 6, 6, 7, 2, 7, 4, 4, 0, 3, 3, 6, 0, 1, 5, 6, 0, 5, 4, 3, 5, 7, 0, 4, 4, 4, 4, 3, 0, 0, 3, 8, 3, 6, 8, 8, 7, 0, 6, 2, 4, 1, 4, 9, 3, 0, 9, 6, 6, 8, 6, 0, 2, 5, 3, 8, 6, 3, 0, 8, 6, 8, 9, 0
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OFFSET
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1,2
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LINKS
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FORMULA
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EXAMPLE
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1.2552211343298486031402667274403360...
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MATHEMATICA
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x = N[Sum[2^(1 - n)/LucasL[n], {n, 1, 500}], 100]
RealDigits[x][[1]]
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PROG
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(PARI) L(n) = real((2 + quadgen(5)) * quadgen(5)^n); \\ A000032
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CROSSREFS
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KEYWORD
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AUTHOR
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STATUS
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approved
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