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A108971 Lexicographically smallest sequence such that in decimal representation sums of digits of consecutive terms differ exactly by 1 or -1. +0
1
1, 2, 3, 4, 5, 6, 7, 8, 9, 17, 16, 15, 14, 13, 12, 11, 10, 20, 21, 22, 23, 24, 25, 26, 18, 19, 27, 28, 29, 37, 36, 35, 34, 33, 32, 31, 30, 40, 41, 42, 43, 44, 45, 46, 38, 39, 47, 48, 49, 57, 56, 55, 54, 53, 52, 51, 50, 60, 61, 62, 63, 64, 65, 66, 58, 59, 67, 68, 69, 77, 76, 75 (list; graph; listen)
OFFSET

1,2

COMMENT

A self-inverse permutation of natural numbers: a(a(n))=n;

abs(A007953(a(n+1)) - A007953(a(n))) = 1.

LINKS

Index entries for sequences that are permutations of the natural numbers

CROSSREFS

Sequence in context: A132722 A048407 A133504 this_sequence A124359 A124366 A048408

Adjacent sequences: A108968 A108969 A108970 this_sequence A108972 A108973 A108974

KEYWORD

nonn,base

AUTHOR

Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Jul 27 2005

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Last modified November 23 10:40 EST 2009. Contains 167421 sequences.


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