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A073795 Replace 8^k with (-8)^k in base 8 expansion of n. 8
0, 1, 2, 3, 4, 5, 6, 7, -8, -7, -6, -5, -4, -3, -2, -1, -16, -15, -14, -13, -12, -11, -10, -9, -24, -23, -22, -21, -20, -19, -18, -17, -32, -31, -30, -29, -28, -27, -26, -25, -40, -39, -38, -37, -36, -35, -34, -33, -48, -47, -46, -45, -44, -43, -42, -41, -56, -55, -54, -53, -52, -51, -50, -49 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

COMMENTS

Base 8 representation for n (in lexicographic order) converted from base -8 to base 10.

LINKS

Table of n, a(n) for n=0..63.

MATHEMATICA

f[n_Integer, b_Integer] := Block[{l = IntegerDigits[n]}, Sum[l[[ -i]]*(-b)^(i - 1), {i, 1, Length[l]}]]; a = Table[ FromDigits[ IntegerDigits[n, 8]], {n, 0, 80}]; b = {}; Do[b = Append[b, f[a[[n]], 8]], {n, 1, 80}]; b

CROSSREFS

Cf. A007094, A073789, A053985, A065369, A073791, A073792, A073793, A073794, A073796 & A073835.

Sequence in context: A063917 A234344 A171890 * A017893 A017883 A245353

Adjacent sequences:  A073792 A073793 A073794 * A073796 A073797 A073798

KEYWORD

base,easy,sign

AUTHOR

Robert G. Wilson v, Aug 12 2002

STATUS

approved

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Last modified December 18 08:26 EST 2014. Contains 252114 sequences.