%I M4394 #16 Dec 19 2021 09:14:02
%S 7,29,57,227,455,1821,3641,14563,29127,116509,233017,932067,1864135,
%T 7456541,14913081,59652323,119304647,477218589,954437177,3817748707,
%U 7635497415,30541989661,61083979321,244335917283,488671834567,1954687338269
%N Positions of remoteness 2 in Beans-Don't-Talk.
%D N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
%H R. K. Guy, <a href="http://www.jstor.org/stable/2689400">John Isbell's game of beanstalk and John Conway's game of beans-don't-talk</a>, Math. Mag. 59 (1986), no. 5, 259-269.
%F Numbers of the form (2^(3*n+3)+(-1)^n)/9 or (2^(3*n+5)-5*(-1)^n)/9 for n >= 1 [From Guy]. - _Sean A. Irvine_, Aug 11 2016
%K nonn
%O 1,1
%A _N. J. A. Sloane_
%E More terms from _Sean A. Irvine_, Aug 11 2016