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A145679
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Lower limit of backward value of 2^n and n!.
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3
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2, 1, 1, 0, 1, 0, 0, 1, 0, 1, 0, 1, 1, 0, 0, 1, 0, 1, 0, 0, 0, 1, 1, 1, 1, 0, 1, 1, 1, 1, 0, 0, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 1, 0, 1, 1, 1, 0, 0, 1, 1, 0, 1, 1, 0, 0, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0
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OFFSET
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1,1
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COMMENTS
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For n!, omitting the trailing sequence zeros. - Simon Plouffe, Mar 05 2017
The terms are deduced from sequence A023415.
The sum of constants in A145679 and A023415 is conjectured to be 11 exactly.
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LINKS
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Table of n, a(n) for n=1..88.
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PROG
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(Python)
# lower limit of backward value of 2^n
a, i=2, 0; x=a
while 1:
i+=1; print x, ', ' ,
if a%2**(i+1) == 0: x=0
else: x=1; a+=10**i
# Cezary Glowacz, Mar 11 2017
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CROSSREFS
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Cf. A000079, A004154, A023415, A158624, A158625.
Sequence in context: A089311 A086784 A104162 * A007273 A016319 A342531
Adjacent sequences: A145676 A145677 A145678 * A145680 A145681 A145682
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KEYWORD
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nonn,base
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AUTHOR
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Simon Plouffe, Mar 23 2009
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EXTENSIONS
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More terms from Cezary Glowacz, Feb 26 2017
More terms from Jinyuan Wang, Mar 01 2020
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STATUS
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approved
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