A106657 Smallest semiprime ending in exactly n 2's.

62, 22, 4222, 32222, 622222, 1222222, 142222222, 122222222, 7222222222, 62222222222, 622222222222, 4222222222222, 62222222222222, 722222222222222, 10222222222222222, 202222222222222222, 322222222222222222

Offset

1,1

Links

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

Example

a(3)=4222 is a term because 4222 is the smallest semiprime ending in exactly three 2's.

Crossrefs

Sequence in context: A058913 A236301 A218166 * A033382 A143733 A296766

Adjacent sequences: A106654 A106655 A106656 * A106658 A106659 A106660

Keyword

base,nonn

Author

Shyam Sunder Gupta, May 12 2005

Status

approved