cp's OEIS Frontend

A055563 a(n) = least number greater than a(n-1) not the sum of an earlier pair of consecutive terms, a(0) = 3.

%I A055563 #9 Mar 29 2017 08:53:54
%S A055563 3,4,5,6,8,10,12,13,15,16,17,19,20,21,23,24,26,27,29,30,32,34,35,37,
%T A055563 38,40,42,43,45,46,48,49,51,52,54,55,57,58,60,61,63,64,65,67,68,70,71,
%U A055563 73,74,76,77,79,80,81,83,84,86,87,89,90,92,93,95,96,98,99,101,102,104,105
%N A055563 a(n) = least number greater than a(n-1) not the sum of an earlier pair of consecutive terms, a(0) = 3.
%H A055563 Ivan Neretin, <a href="/A055563/b055563.txt">Table of n, a(n) for n = 0..10000</a>
%F A055563 a(n) = A022424(n) - a(n-1) for n > 0.
%e A055563 a(3) = 6 because a(2) = 5, 6 <> a(0) + a(1) and 6 <> a(1) + a(2);
%e A055563 a(4) = 8 because a(3) = 6, 7 = a(0) + a(1), 8 <> a(0) + a(1), 8 <> a(1) + a(2) and 8 <> a(2) + a(3).
%Y A055563 Complement of A022424. See A001651 for a(0) = 1 and A055562 for a(0) = 2.
%K A055563 nonn
%O A055563 0,1
%A A055563 _Henry Bottomley_, May 26 2000