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Also an interesting triangle read by row: See tabl.
Table of n, a(n) for n=1..78.
Index entries for characteristic functions
Index entries for zeta function.
a(30)=0 because 30 is the nearest integer to imaginary part of 4th nontrivial zero of Riemann zeta function.
See A002410 for more information. Cf. A058303, A065434, A065452, A065453.
Sequence in context: A014230 A014451 A106667 * A296079 A167850 A167851
Adjacent sequences: A133008 A133009 A133010 * A133012 A133013 A133014
Omar E. Pol, Sep 13 2007