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A113624 Highly composite numbers containing only composite digits (0,4,6,8,9). 0
4, 6, 8, 9, 40, 48, 49, 60, 64, 80, 84, 90, 96, 98, 400, 448, 480, 486, 490, 600, 640, 648, 686, 800, 840, 864, 896, 900, 960, 980, 4000, 4096, 4480, 4608, 4800, 4860, 4900, 6000, 6048, 6400, 6480, 6804, 6860, 8000, 8064, 8400, 8640, 8960, 9000, 9408, 9600 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Table of n, a(n) for n=0..50.

EXAMPLE

96 is a term as 96 = 2^5*3 and contains digits 9,6 both composite. 96 is a member of A002473.

MATHEMATICA

Select[Select[Range[2, 10000], FactorInteger[ # ][[ -1]][[1]] <= 7 &], DigitCount[ # ][[1]]+DigitCount[ # ][[2]]+DigitCount[ # ][[3]]+DigitCount[ # ][[5]]+ DigitCount[ # ][[7]] == 0 &] (* Stefan Steinerberger, Apr 11 2006 *)

CROSSREFS

Cf. A002473, A113623.

Sequence in context: A073866 A202260 A001744 * A113591 A029581 A202262

Adjacent sequences:  A113621 A113622 A113623 * A113625 A113626 A113627

KEYWORD

base,nonn

AUTHOR

Amarnath Murthy, Nov 10 2005

EXTENSIONS

More terms from Stefan Steinerberger, Apr 11 2006

STATUS

approved

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Last modified May 23 03:10 EDT 2019. Contains 323507 sequences. (Running on oeis4.)