Invitation: celebrating 50 years of OEIS, 250000 sequences, and Sloane's 75th, there will be a conference at DIMACS, Rutgers, Oct 9-10 2014.
Table of n, a(n) for n=1..24.
Index entries for sequences related to divisors of numbers
Sequence in context: A162293 A233459 A145803 * A018357 A061489 A117595
Adjacent sequences: A018626 A018627 A018628 * A018630 A018631 A018632
N. J. A. Sloane.