

A004715


Positions of ones in binary expansion of arctan(1/2)/Pi.


2



3, 6, 8, 9, 10, 13, 21, 23, 27, 28, 29, 31, 32, 35, 36, 37, 39, 40, 41, 42, 43, 46, 47, 52, 57, 58, 61, 62, 65, 67, 69, 70, 72, 76, 80, 81, 82, 83, 85, 86, 88, 89, 91, 92, 94, 96, 97, 98, 102, 103, 105, 107, 111, 112
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OFFSET

1,1


REFERENCES

S. R. Finch, Mathematical Constants, Cambridge, 2003, pp. 430433.


LINKS

T. D. Noe, Table of n, a(n) for n=1..1000
J. M. Borwein and R. Girgensohn, Addition theorems and binary expansions, Canadian J. Math. 47 (1995) 262273.
S. R. Finch, Plouffe's Constant
Simon Plouffe, The Computation of Certain Numbers Using a Ruler and Compass, J. Integer Seqs. Vol. 1 (1998), #98.1.3.
Eric Weisstein's World of Mathematics, Plouffe's Constant.


CROSSREFS

Cf. A028999.
Sequence in context: A153307 A265227 A201817 * A190234 A036558 A005870
Adjacent sequences: A004712 A004713 A004714 * A004716 A004717 A004718


KEYWORD

nonn,base


AUTHOR

Simon Plouffe


STATUS

approved



