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A067095 Floor[X/Y] where X = concatenation in increasing order of first n even number and Y = that of first n odd numbers. 8
2, 1, 1, 1, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 181, 181, 181, 181, 181, 181, 181, 181, 181, 181, 181, 181, 181, 181, 181, 181 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..65.

EXAMPLE

a(4)= floor[2468/1357] =floor[1.81871775976418570375829034635225] = 1.

a(20000) = 18175.

MATHEMATICA

f[n_] := (k = 1; x = y = "0"; While[k < n + 1, x = StringJoin[x, ToString[2k]]; y = StringJoin[y, ToString[2k - 1]]; k++ ]; Return[ Floor[ ToExpression[x] / ToExpression[y]]] ); Table[ f[n], {n, 1, 75} ]

With[{ev=Range[2, 140, 2], od=Range[1, 139, 2]}, Table[Floor[FromDigits[ Flatten[ IntegerDigits/@ Take[ev, n]]]/FromDigits[Flatten[ IntegerDigits/@ Take[od, n]]]], {n, 70}]] (* Harvey P. Dale, Aug 19 2011 *)

CROSSREFS

Cf. A067088, A067089, A067090, A067091, A067092, A067093, A067094.

floor[A019520(n)/A019519(n)]

Sequence in context: A342458 A256688 A029582 * A070888 A180849 A067101

Adjacent sequences:  A067092 A067093 A067094 * A067096 A067097 A067098

KEYWORD

easy,nonn,base

AUTHOR

Amarnath Murthy, Jan 07 2002

EXTENSIONS

More terms from Robert G. Wilson v, Jan 09 2002

STATUS

approved

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Last modified June 15 08:52 EDT 2021. Contains 345048 sequences. (Running on oeis4.)