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 A109910 a(n) = 9's complement of digit reversal of n. 2
 9, 8, 7, 6, 5, 4, 3, 2, 1, 0, 8, 88, 78, 68, 58, 48, 38, 28, 18, 8, 7, 87, 77, 67, 57, 47, 37, 27, 17, 7, 6, 86, 76, 66, 56, 46, 36, 26, 16, 6, 5, 85, 75, 65, 55, 45, 35, 25, 15, 5, 4, 84, 74, 64, 54, 44, 34, 24, 14, 4, 3, 83, 73, 63, 53, 43, 33, 23, 13, 3, 2 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 LINKS Nathaniel Johnston, Table of n, a(n) for n = 0..10000 FORMULA a(n) = A061601(A004086(n)). - Indranil Ghosh, Jan 30 2017 EXAMPLE a(17) = 28. Digit reversal of 17 = 71, 9's complement of 71 is 99-71 = 28. MAPLE R := proc(n) local nn, nnn: nn:=convert(n, base, 10): add(nn[nops(nn)+1-j]*10^(j-1), j=1..nops(nn)): end: A109910 := proc(n) return 10^length(max(R(n), 1)) - R(n) - 1: end: seq(A109910(n), n=0..70); # Nathaniel Johnston, Apr 28 2011 MATHEMATICA Table[10^If[# == 0, 1, IntegerLength@ #] - 1 - # &@ FromDigits@ Reverse@ IntegerDigits@ n, {n, 0, 70}] (* Michael De Vlieger, Feb 01 2017 *) PROG (Python) def A109910(n): ....x=int(str(n)[::-1]) ....return 10**len(str(x))-1-x # Indranil Ghosh, Jan 30 2017 CROSSREFS Cf. A004086, A061601, A109911. Sequence in context: A199264 A022965 A023451 * A307340 A084019 A061601 Adjacent sequences: A109907 A109908 A109909 * A109911 A109912 A109913 KEYWORD base,easy,nonn,look AUTHOR Amarnath Murthy, Jul 16 2005 STATUS approved

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Last modified July 20 18:43 EDT 2024. Contains 374459 sequences. (Running on oeis4.)