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A071584
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Powers of 7 written backwards.
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2
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1, 7, 94, 343, 1042, 70861, 946711, 345328, 1084675, 70635304, 942574282, 3476237791, 10278214831, 70401098869, 948270322876, 3499051657474, 10696503923233, 702789315036232, 9440197953148261, 34137358159889311
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listen;
history;
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internal format)
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OFFSET
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0,2
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LINKS
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Alois P. Heinz, Table of n, a(n) for n = 0..1000
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MAPLE
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a:= n-> (s-> parse(cat(s[-i]$i=1..length(s))))(""||(7^n)):
seq(a(n), n=0..50); # Alois P. Heinz, Apr 09 2015
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MATHEMATICA
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FromDigits[Reverse[IntegerDigits[#]]]&/@(7^Range[0, 20]) (* Harvey P. Dale, Apr 29 2012 *)
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PROG
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(PARI) for(i=1, 50, n=5^i; s=ceil(log(n)/log(10)); print1(sum(i=0, s, 10^(s-i-1)*(floor(n/10^i)-10*floor(n/10^(i+1)))), ", "))
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CROSSREFS
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Sequence in context: A220405 A109304 A134113 * A132114 A221384 A243679
Adjacent sequences: A071581 A071582 A071583 * A071585 A071586 A071587
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KEYWORD
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easy,nonn,base
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AUTHOR
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Benoit Cloitre, Jun 01 2002
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STATUS
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approved
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