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A276834 Decimal expansion of Pi/K, where K is the Landau-Ramanujan constant. 1
4, 1, 1, 0, 8, 2, 8, 8, 6, 3, 8, 2, 1, 6, 3, 3, 0, 2, 3, 8, 0, 8, 4, 8, 9, 7, 1, 6, 1, 5, 8, 5, 9, 2, 1, 2, 9, 2, 3, 9, 4, 1, 6, 5, 0, 2, 2, 0, 6, 1, 5, 7, 4, 4, 2, 5, 1, 9, 0, 3, 9, 5, 9, 6, 9, 3, 2, 1, 9, 6, 5, 4, 0, 3, 1, 8, 2, 3, 4, 3 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

There are ~ Pi*n representations x^2 + y^2 of the numbers up to n, but only ~ K*n/sqrt(log n) of them are nonzero. Each of those nonzero numbers has on average (Pi/K)*sqrt(log n) such representations.

LINKS

Charles R Greathouse IV, Table of n, a(n) for n = 1..10000

CROSSREFS

Cf. A064533, A004018.

Sequence in context: A128760 A057884 A329637 * A016684 A324564 A276974

Adjacent sequences:  A276831 A276832 A276833 * A276835 A276836 A276837

KEYWORD

nonn,cons

AUTHOR

Charles R Greathouse IV, Sep 19 2016

STATUS

approved

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Last modified May 18 05:01 EDT 2021. Contains 343994 sequences. (Running on oeis4.)