A089543 Lesser prime factor of semiprimes in A089542.

2, 2, 3, 7, 53, 29, 353, 1549, 8353, 7, 15889, 1691419, 347, 67, 1097, 274177, 43, 18882774223, 67, 5197, 1801088543, 556114086547, 44773, 3062989, 5641, 92553847628747, 18349361, 607, 51131, 13217, 42806180589950051

Offset

1,1

Links

Table of n, a(n) for n=1..31.

Crossrefs

Cf. A085753, A089542, A089544.

Sequence in context: A053413 A232542 A143673 * A139073 A329955 A099870

Adjacent sequences: A089540 A089541 A089542 * A089544 A089545 A089546

Keyword

nonn

Author

Ray Chandler, Nov 09 2003

Status

approved