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A195914
a(n) = largest m such that Sum_{k=0..m} 1/(mk+1) < 2Pi.
0
5, 299, 40248, 6699356, 1199640415, 222209538173, 41928392459412, 8000791810720605, 1537961933686185453, 297136851932007766218, 57616626381701142703593, 11202463675353183172586907, 2182608774487516995740392959, 425930131275278060684396950683, 83225800344072649528263059652618, 16279019516889202909861702224716180, 3186898150182578894413446451622161442
OFFSET
0,1
LINKS
R. Baillie, Fun With Very Large Numbers, arXiv preprint arXiv:1105.3943, 2011
EXAMPLE
a(0) = 5 because Sum_{k=0..5} 1 < 2Pi (but 6 would be too big).
CROSSREFS
Sequence in context: A140016 A282967 A291333 * A159012 A158994 A158996
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Sep 25 2011
STATUS
approved