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A067088 Floor[X/Y] where X = concatenation of (n+1), (n+2), ...up to 2n and Y = concatenation of 1,2,3,4,... up to n. 10
2, 2, 3, 4, 54, 6391, 721719, 73719014, 819008271, 900826453, 982644636, 1064462818, 1146281001, 1228099183, 1309917366, 1391735548, 1473553731, 1555371913, 1637190096, 1719008278, 1800826461, 1882644643, 1964462826 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Table of n, a(n) for n=0..22.

EXAMPLE

a(4) =floor[ 5678/1234]= floor[4.60129659643435980551053484602917] = 4; a(6)= floor [ 789101112/123456] = 6391.

MATHEMATICA

f[n_] := (k = 1; x = y = "0"; While[k < n + 1, x = StringJoin[x, ToString[n + k]]; y = StringJoin[y, ToString[2k - 1]]; k++ ]; Return[ Floor[ ToExpression[x] / ToExpression[y]]] ); Table[ f[n], {n, 1, 24} ]

CROSSREFS

Sequence in context: A309895 A270744 A093927 * A065519 A329792 A058256

Adjacent sequences:  A067085 A067086 A067087 * A067089 A067090 A067091

KEYWORD

easy,base,nonn

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 16 09:55 EDT 2021. Contains 345056 sequences. (Running on oeis4.)