A078205 a(n) = A078204(n)/N where N = concatenation of 1 up to n.

1, 18, 261, 3502, 44003, 530004, 6200005, 71000006, 800000008, 8900000074, 8999000074522, 98099900812365, 10628099988011209, 11446281093786559142, 122644629115519160114, 13082644736437172941406, 139008265613936288720365

Offset

1,2

Links

Table of n, a(n) for n=1..17.

Example

a(3) = 261 = 32103/123.

Crossrefs

Cf. A078204.

Sequence in context: A255379 A255380 A255381 * A316698 A254248 A080583

Adjacent sequences: A078202 A078203 A078204 * A078206 A078207 A078208

Keyword

base,nonn

Author

Amarnath Murthy, Nov 22 2002

Extensions

More terms from Sascha Kurz, Jan 04 2003

Status

approved