%I A132131
%S A132131 1,13,22,24,33,35,44,46,55,57,66,68,77,79,88,90,100,102,113,124,133,143,
%T A132131 153,163,173,183,193,203,224,235,244,254,264,274,284,294,304,335,346,
%U A132131 355,365,375,385,395,405,446,457,466,476,486,496,506,557,568,577,587
%N A132131 "Punctual Bird" numbers n with the additional property that n-1 is not 
               a Punctual Bird (cf. A131881).
%C A132131 Punctual Birds (A131881) are all numbers k with A132131(n) <= k < A132132(n) 
               for some n Early Birds (A116700) are all numbers k with A132132(n) 
               <= k < A132131(n+1) for some n
%H A132131 Graeme McRae, <a href="b132131.txt">Table of n, a(n) for n = 1..27348</
               a>
%e A132131 a(1)=1 because 1 is the first Punctual Bird.
%e A132131 a(2)=13 because 1-11 are Punctual Birds and 12 is not a Punctual Bird.
%e A132131 a(3)=22 because 13-20 are Punctual Birds and 21 is not a Punctual Bird.
%Y A132131 Cf. A033307, A117804, A116700, A131881, A132132, A132133.
%Y A132131 Sequence in context: A056523 A158998 A122559 this_sequence A059408 A164455 
               A164504
%Y A132131 Adjacent sequences: A132128 A132129 A132130 this_sequence A132132 A132133 
               A132134
%K A132131 base,nonn
%O A132131 1,2
%A A132131 Graeme McRae (g_m(AT)mcraefamily.com), Aug 11 2007