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A068345
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Powers of 2, the fourth-from-last digit of which equals 7.
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0
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2097152, 16777216, 134217728, 4294967296, 1099511627776, 70368744177664, 72057594037927936, 4611686018427387904, 9444732965739290427392, 38685626227668133590597632, 19807040628566084398385987584
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,1
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REFERENCES
| Sylvia Nasar, A Beautiful Mind (1998), p. 80.
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MATHEMATICA
| Select[NestList[2#&, 1024, 150], Take[IntegerDigits[ # ], {-4, -4}][[1]]==7&]
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CROSSREFS
| Sequence in context: A011571 A022537 A195236 * A194935 A016999 A017071
Adjacent sequences: A068342 A068343 A068344 * A068346 A068347 A068348
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KEYWORD
| nonn,base
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AUTHOR
| Harvey P. Dale (hpd1(AT)nyu.edu), Mar 06 2002
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