A080448 a(1) = 4, a(n) = smallest (nontrivial) multiple of a(n-1) containing n digits, a(n) not equal to 10*a(n-1). Also a(n) is not divisible by 10.

4, 12, 108, 1188, 10692, 117612, 1058508, 11643588, 104792292, 1152715212, 10374436908, 114118805988, 1027069253892, 11297761792812, 101679856135308, 1118478417488388, 10066305757395492, 110729363331350412

Offset

1,1

Links

Table of n, a(n) for n=1..18.

Crossrefs

Cf. A080445, A080446, A080447, A080449, A080450, A080451, A080452, A080453.

Sequence in context: A079822 A216043 A245647 * A155174 A053491 A285451

Adjacent sequences: A080445 A080446 A080447 * A080449 A080450 A080451

Keyword

base,nonn

Author

Amarnath Murthy, Feb 23 2003

Extensions

More terms from Antonio G. Astudillo (afg_astudillo(AT)lycos.com), Apr 06 2003

Status

approved