A113591 Least multiple of composite(n), containing only composite digits (0,4,6,8,9).

0, 4, 6, 8, 9, 40, 48, 84, 60, 48, 90, 40, 84, 44, 48, 400, 468, 486, 84, 60, 64, 66, 68, 490, 468, 494, 468, 40, 84, 44, 90, 46, 48, 49, 400, 408, 468, 486, 440, 448, 684, 406, 60, 496, 6048, 64, 4680, 66, 68, 69, 490, 648, 444, 600, 608, 4004, 468, 80, 486, 984, 84

Offset: 0

Author

Amarnath Murthy, Nov 07 2005

Keywords

• base
• easy
• nonn

Comments

The sequence A002808 is extended with A002808(0)=0 to define "composite" here. Every term occurs in A001744. - R. J. Mathar, Aug 28 2007

Examples

			a(7) = 84, composite (7) =14, term corresponding to 14 is 84.
		

Crossrefs

Cf. A002808, A078240, A113590.

Formula

a(n) = A078240(A002808(n)) for n > 0. - Andrew Howroyd, Sep 17 2024

Extensions

Corrected and extended by R. J. Mathar, Aug 28 2007