1,3

Table of n, a(n) for n=1..16.

A. Karttunen and J. Moyer, C-program for computing the initial terms of this sequence

Index entries for sequences related to occurrences of various subsets of primes in range ]2^n,2^(n+1)]

In range ]2^4,2^5] 17 (10001 in binary) is only such prime thus a(2)=1.

Cf. A095018.

Sequence in context: A027227 A027228 A026950 * A196984 A131433 A110713

Adjacent sequences: A095049 A095050 A095051 * A095053 A095054 A095055

nonn

Antti Karttunen, Jun 01 2004

approved