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Search: id:A073835
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| A073835 |
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Replace 10^k with (-10)^k in decimal expansion of n. |
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+0
9
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| 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, -10, -9, -8, -7, -6, -5, -4, -3, -2, -1, -20, -19, -18, -17, -16, -15, -14, -13, -12, -11, -30, -29, -28, -27, -26, -25, -24, -23, -22, -21, -40, -39, -38, -37, -36, -35, -34, -33, -32, -31, -50, -49, -48, -47, -46, -45, -44, -43, -42, -41, -60
(list; graph; listen)
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OFFSET
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0,3
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COMMENT
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Base 10 representation for n (in lexicographic order) converted from base -10 to base 10.
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MATHEMATICA
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f[n_Integer, b_Integer] := Block[{l = IntegerDigits[n]}, Sum[l[[ -i]]*(-b)^(i - 1), {i, 1, Length[l]}]]; a = Table[romDigits[ IntegerDigits[n, 10]], {n, 0, 80}]; b = {}; Do[ b = Append[b, f[a[[n]], 10]], {n, 1, 80}]; b
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CROSSREFS
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Cf. A001477, A039723, A053985, A065369, A073791, A073792, A073793, A073794, A073795 & A073796.
Sequence in context: A064698 A094175 A048893 this_sequence A051503 A136687 A086706
Adjacent sequences: A073832 A073833 A073834 this_sequence A073836 A073837 A073838
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KEYWORD
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base,easy,sign
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AUTHOR
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Robert G. Wilson v (rgwv(AT)rgwv.com), Aug 12 2002
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