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1,1
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)=1 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: A216038 A011728 A297043 * A234323 A162782 A011727
Adjacent sequences: A133007 A133008 A133009 * A133011 A133012 A133013
easy,nonn,tabl
Omar E. Pol, Sep 13 2007
approved