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%I #6 Jun 24 2013 02:33:32
%S 2097152,16777216,134217728,4294967296,1099511627776,70368744177664,
%T 72057594037927936,4611686018427387904,9444732965739290427392,
%U 38685626227668133590597632,19807040628566084398385987584
%N Powers of 2, the fourth-from-last digit of which equals 7.
%D Sylvia Nasar, A Beautiful Mind (1998), p. 80.
%t Select[NestList[2#&, 1024, 150], Take[IntegerDigits[ # ], {-4, -4}][[1]]==7&]
%Y Cf. A066867.
%K nonn,base
%O 1,1
%A _Harvey P. Dale_, Mar 06 2002
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