A086559 a(n) = (smallest n-digit number beginning with n and having prime signature of n)- (smallest n-digit number beginning with n).

0, 3, 7, 489, 21, 7, 3, 62991, 660121, 6, 21, 4, 21, 1, 17, 4502443050081, 9, 27, 9, 12, 39, 3, 3, 57, 8887056427569, 17, 20039676975717396967, 156, 23, 5, 291, 240000720001080000810000243, 5, 33, 6, 8400000000000000049, 3, 9, 11

Offset: 1

Author

Amarnath Murthy, Aug 30 2003

Keywords

• base
• nonn

Examples

			a(4) = 4489 -4000=489.
		

Crossrefs

Cf. A086558.

Formula

a(n) = A086558(n) - n*10^(n-d), where d = the number of digits in n.

Extensions

More terms from Sascha Kurz, Sep 22 2003