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A126038 Index where n first appears in A128333, or -1 if n never appears. 3

%I

%S 0,1,3,-1,2,15,-1,4,17,-1,14,6,-1,11,182,-1,16,8,-1,21,13,-1,5,145,-1,

%T 18,10,-1,181,23,-1,349,41,-1,7,147,-1,178,20,-1,12,346,-1,183,25,-1,

%U 144,56,-1,188,30,-1,9,149,-1,48,180,-1,22,317,-1,141,348,-1

%N Index where n first appears in A128333, or -1 if n never appears.

%C Positive multiples of 3 never appear in A128333. Does every other number eventually appear there?

%K sign

%O 0,3

%A Nick Hobson (nickh(AT)qbyte.org), Feb 28 2007

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Last modified July 4 18:38 EDT 2020. Contains 335448 sequences. (Running on oeis4.)