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A004086 Read n backwards (referred to as R(n) in many sequences). +0
139
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 1, 11, 21, 31, 41, 51, 61, 71, 81, 91, 2, 12, 22, 32, 42, 52, 62, 72, 82, 92, 3, 13, 23, 33, 43, 53, 63, 73, 83, 93, 4, 14, 24, 34, 44, 54, 64, 74, 84, 94, 5, 15, 25, 35, 45, 55, 65, 75, 85, 95, 6, 16, 26, 36, 46, 56, 66, 76, 86, 96, 7, 17, 27, 37, 47 (list; graph; listen)
OFFSET

0,3

COMMENT

Also called digit reversal of n.

For n>0: a(a(n)) = n iff n mod 10 > 0. - Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Mar 10 2002

LINKS

Franklin T. Adams-Watters, Table of n, a(n) for n = 0..1000

MAPLE

read transforms; A004086 := digrev;

MATHEMATICA

Table[FromDigits[Reverse[IntegerDigits[n]]], {n, 0, 75}]

PROGRAM

(PARI) digits(n) = {local(m, r); r=[]; m=n; while(m>0, r=concat(m%10, r); m=floor(m/10)); r}; A004086(n) = {local(b, m, r); r=0; b=1; m=digits(n); for(i=1, matsize(m)[2], r=r+b*m[i]; b=b*10); r} [From Michael Porter (michael_b_porter(AT)yahoo.com), Oct 16 2009]

CROSSREFS

Sequence in context: A107603 A161594 A084011 this_sequence A121760 A061816 A083960

Adjacent sequences: A004083 A004084 A004085 this_sequence A004087 A004088 A004089

KEYWORD

nonn,base,nice

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

EXTENSIONS

Extended by Ray Chandler (rayjchandler(AT)sbcglobal.net), Dec 30 2004

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.


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