A098745 Number of primes between prime(n)/sqrt(2) and prime(n)*sqrt(2).

1, 1, 2, 2, 2, 3, 4, 3, 5, 5, 6, 6, 7, 7, 7, 9, 10, 9, 9, 10, 12, 13, 14, 12, 14, 14, 14, 15, 15, 15, 17, 18, 20, 19, 19, 20, 18, 20, 21, 23, 24, 23, 25, 26, 25, 26, 27, 28, 29, 29, 28, 29, 29, 31, 30, 31, 33, 33, 33, 33, 32, 34, 37, 38, 38, 38, 40, 40, 40, 41, 42, 42, 42, 43, 43

Offset

1,3

Comments

a(n) = A000720(A001951(A000040(n))) - A000720(A049472(A000040(n))).

Links

Table of n, a(n) for n=1..75.

Crossrefs

Sequence in context: A236919 A138304 A054860 * A029158 A241953 A156197

Adjacent sequences: A098742 A098743 A098744 * A098746 A098747 A098748

Keyword

nonn

Author

Reinhard Zumkeller, Oct 01 2004

Status

approved