A276834 Decimal expansion of Pi/K, where K is the Landau-Ramanujan constant.

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

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