%I A080680
%S A080680 2,3,4,5,6,6,7,7,8,9,9,10,10,10,11,12,12,13,13,13,14,15,15,15,16,16,16,
%T A080680 16,17,17,17,18,18,18,19,19,19,20,20,20,20,21,21,21,22,22,23,23,23,24,
%U A080680 24,24,24,24,25,25,25,25,26,26,26,27,27,27,27,27,28,28,28,28,29,29,29
%N A080680 Integer part of squareroot of n-th prime == 1 (modulo 4).
%C A080680 a(n)^2 < A002330(n+2)^2 + A002331(n+2)^2 < a(n+1)^2.
%F A080680 a(n) = A000196(A002144(n)).
%Y A080680 Sequence in context: A025544 A121856 A132172 this_sequence A005376 A086419 
               A025548
%Y A080680 Adjacent sequences: A080677 A080678 A080679 this_sequence A080681 A080682 
               A080683
%K A080680 nonn
%O A080680 1,1
%A A080680 Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Mar 02 2003