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A068345 Powers of 2, the fourth-from-last digit of which equals 7. +0
1
2097152, 16777216, 134217728, 4294967296, 1099511627776, 70368744177664, 72057594037927936, 4611686018427387904, 9444732965739290427392, 38685626227668133590597632, 19807040628566084398385987584 (list; graph; listen)
OFFSET

0,1

REFERENCES

Sylvia Nasar, A Beautiful Mind (1998), p. 80.

MATHEMATICA

Select[NestList[2#&, 1024, 150], Take[IntegerDigits[ # ], {-4, -4}][[1]]==7&]

CROSSREFS

Sequence in context: A126435 A011571 A022537 this_sequence A016999 A017071 A017263

Adjacent sequences: A068342 A068343 A068344 this_sequence A068346 A068347 A068348

KEYWORD

nonn,base

AUTHOR

Harvey P. Dale (hpd1(AT)nyu.edu), Mar 06 2002

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Last modified December 5 08:23 EST 2009. Contains 170348 sequences.


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