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A073823
Decimal expansion of number with continued fraction expansion 0, 1, 3, 6, 10, ... (the triangular numbers).
2
7, 5, 9, 8, 4, 3, 5, 4, 3, 0, 6, 2, 0, 6, 1, 4, 7, 0, 1, 0, 5, 2, 7, 7, 8, 4, 1, 7, 9, 1, 8, 0, 9, 7, 0, 8, 8, 6, 4, 6, 8, 0, 2, 4, 3, 8, 5, 1, 7, 2, 6, 1, 5, 8, 1, 7, 8, 5, 9, 8, 8, 5, 2, 3, 0, 4, 3, 0, 9, 9, 4, 2, 0, 2, 9, 8, 1, 2, 4, 7, 1, 8, 8, 3, 5, 5, 6, 1, 4, 5, 9, 6, 1, 4, 7, 9, 1, 9, 4, 0, 0, 1, 3, 5
OFFSET
0,1
EXAMPLE
0.75984354306206147010527784179...
MATHEMATICA
RealDigits[FromContinuedFraction[Accumulate[Range[0, 200]]], 10, 120] [[1]] (* Harvey P. Dale, Sep 25 2012 *)
PROG
(PARI) dec_exp(v)= w=contfracpnqn(v); w[1, 1]/w[2, 1]+0. dec_exp(vector(2000, i, i*(i-1)/2))
CROSSREFS
Cf. A000217 (triangular numbers).
Sequence in context: A346589 A113816 A358186 * A351212 A323669 A356526
KEYWORD
cons,nonn
AUTHOR
Rick L. Shepherd, Aug 12 2002
STATUS
approved