

A231158


Number of Gram blocks [g(j), g(j+2)) up to 10^n with 0 <= j < 10^n.


2




OFFSET

2,2


COMMENTS

We call a Gram point g(j) "good" if j is not in A114856, and "bad" otherwise. A "Gram block of length k" is an interval [g(j), g(j+k)) such that g(j) and g(j+k) are good Gram points, g(j+1), ..., g(j+k1) are bad Gram points, and k >= 1.


LINKS

Table of n, a(n) for n=2..8.
Richard P. Brent, On the Zeros of the Riemann Zeta Function in the Critical Strip, Math. Comp. 33 (1979), pp. 13611372.
Eric Weisstein's World of Mathematics, Gram Block
Eric Weisstein's World of Mathematics, Gram Point


CROSSREFS

Cf. A114856, A231157, A231159A231165.
Sequence in context: A330845 A333113 A252827 * A030197 A225980 A231164
Adjacent sequences: A231155 A231156 A231157 * A231159 A231160 A231161


KEYWORD

nonn,more


AUTHOR

Arkadiusz Wesolowski, Nov 04 2013


STATUS

approved



