The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A071584 Powers of 7 written backwards. 4
 1, 7, 94, 343, 1042, 70861, 946711, 345328, 1084675, 70635304, 942574282, 3476237791, 10278214831, 70401098869, 948270322876, 3499051657474, 10696503923233, 702789315036232, 9440197953148261, 34137358159889311 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 LINKS Alois P. Heinz, Table of n, a(n) for n = 0..1000 MAPLE 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 MATHEMATICA FromDigits[Reverse[IntegerDigits[#]]]&/@(7^Range[0, 20]) (* Harvey P. Dale, Apr 29 2012 *) PROG (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)))), ", ")) CROSSREFS Sequence in context: A220405 A109304 A134113 * A132114 A221384 A243679 Adjacent sequences: A071581 A071582 A071583 * A071585 A071586 A071587 KEYWORD easy,nonn,base AUTHOR Benoit Cloitre, Jun 01 2002 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified September 26 05:45 EDT 2023. Contains 365653 sequences. (Running on oeis4.)