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A372908
Decimal expansion of Sum_{k>=0} (2^k + 1)/(3^k + 1).
4
3, 1, 7, 9, 2, 6, 6, 8, 7, 3, 8, 8, 5, 2, 1, 2, 4, 3, 9, 0, 3, 2, 6, 8, 6, 6, 7, 7, 1, 9, 7, 0, 6, 0, 1, 9, 0, 1, 5, 2, 9, 2, 9, 7, 8, 1, 5, 3, 9, 6, 8, 2, 2, 9, 7, 6, 4, 8, 5, 9, 3, 6, 6, 3, 3, 6, 3, 2, 3, 5, 3, 0, 7, 1, 1, 3, 6, 3, 2, 5, 3, 5, 1, 4, 8, 3
OFFSET
1,1
EXAMPLE
3.17926687388521243903268667719706019015292978153968229...
MATHEMATICA
s = Sum[(2^k + 1)/(3^k + 1), {k, 0, 1000}];
d = N[s, 100]
First[RealDigits[d]]
RealDigits[Total[Table[(2^k+1)/(3^k+1), {k, 0, 1000}]], 10, 100][[1]] (* Harvey P. Dale, Sep 24 2024 *)
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
Clark Kimberling, Jun 12 2024
STATUS
approved