A067098 Floor[X/Y] where X = concatenation in increasing order of first n powers of 3 and Y = that of first n natural numbers.

3, 3, 31, 318, 31817, 3181548, 3181530396, 3181528335091, 31815281031585777, 31815281005815399552, 318152810055319253966698, 3181528100552883295133046294, 318152810055287994498392866979206

Offset: 1

Author

Amarnath Murthy, Jan 07 2002

Keywords

• easy
• base
• nonn

Examples

			a(4)= floor [ 392781/1234] = floor[318.299027552674230145867098865478] = 318.
		

Crossrefs

Cf. A067088, A067089, A067090, A067091, A067092, A067093, A067094, A067095, A067096, A067097.

Programs

Mathematica

f[n_] := (k = 1; x = y = "0"; While[k < n + 1, x = StringJoin[x, ToString[3^k]]; y = StringJoin[y, ToString[k]]; k++ ]; Return[ Floor[ ToExpression[x] / ToExpression[y]]] ); Table[ f[n], {n, 1, 15} ]
Table[Floor[FromDigits[Flatten[IntegerDigits/@(3^Range[n])]]/ FromDigits[ Flatten[IntegerDigits/@Range[n]]]],{n,15}] (* Harvey P. Dale, Mar 10 2019 *)

Extensions

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