A133011 Characteristic function of the Riemann zeta function: If n is a nearest integer to imaginary part of zero, then a(n)=0 else a(n)=1.

1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 1, 0, 1, 1, 0, 1, 1, 1, 1, 0, 1, 1, 0, 1, 0, 1, 1, 1, 1, 0, 1, 0, 1, 1, 0, 1, 1, 0, 1, 1, 0, 1, 0, 1, 1, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1, 1, 1, 0, 0, 1

Offset: 1

Author

Omar E. Pol, Sep 13 2007

Keywords

• easy
• nonn
• tabl

Comments

Also an interesting triangle read by row: See tabl.

Examples

			a(30)=0 because 30 is the nearest integer to imaginary part of 4th nontrivial zero of Riemann zeta function.
		

Links

• Index entries for characteristic functions
• Index entries for zeta function.

Crossrefs

See A002410 for more information. Cf. A058303, A065434, A065452, A065453.