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A167542
Natural numbers, swapped in pairs, with decimal digits reversed.
1
2, 1, 4, 3, 6, 5, 8, 7, 1, 9, 21, 11, 41, 31, 61, 51, 81, 71, 2, 91, 22, 12, 42, 32, 62, 52, 82, 72, 3, 92, 23, 13, 43, 33, 63, 53, 83, 73, 4, 93, 24, 14, 44, 34, 64, 54, 84, 74, 5, 94, 25, 15, 45, 35, 65, 55, 85, 75, 6, 95, 26, 16, 46, 36, 66, 56, 86, 76, 7, 96, 27, 17, 47, 37, 67
OFFSET
1,1
MAPLE
read("transforms") ; A014681 := proc(n) option remember; if n <= 3 then op(n+1, [0, 2, 1, 4]) ; else procname(n-1)+procname(n-2)-procname(n-3) ; end if; end proc: A167542 := proc(n) digrev(A014681(n)) ; end proc: seq(A167542(n), n=1..120) ; # R. J. Mathar, Jan 30 2010
CROSSREFS
Sequence in context: A355678 A355679 A147965 * A167419 A114285 A014681
KEYWORD
nonn,base
AUTHOR
Giovanni Teofilatto, Nov 06 2009
EXTENSIONS
All terms from a(18) on corrected by R. J. Mathar, Jan 30 2010
STATUS
approved