A138670 - OEIS

%I #9 Jul 19 2022 08:12:06

%S 0,1,3,4,6,9,10,12,13,15,18,19,21,24,27,28,30,31,33,36,37,39,40,42,45,

%T 46,48,51,54,55,57,58,60,63,64,66,69,72,73,75,78,81,82,84,85,87,90,91,

%U 93,94,96,99,100,102,105,108,109,111,112,114,117,118,120,121

%N Indices of 0's in Stewart's choral sequence.

%C Conjecture: essentially partial sums of A106036 (verified for n <= 10000). - _Sean A. Irvine_, Jul 19 2022

%H Sean A. Irvine, <a href="/A138670/b138670.txt">Table of n, a(n) for n = 0..9999</a>

%F The set {k*3^(m+1) + (3^m-1)/2 with k >= 0 and m >= 1}.

%Y Cf. A106036, A116178, A138671.

%K easy,nonn

%O 0,3

%A Joel Reyes Noche (joel.noche(AT)up.edu.ph), Mar 26 2008

%E More terms from _Sean A. Irvine_, Jul 19 2022