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..52.
The value of 9 in this sequence corresponds to the record of 9 set by 840 in A138570
Cf. A135060, A138570.
Sequence in context: A039270 A039208 A039119 * A234853 A060863 A063934
Adjacent sequences: A140294 A140295 A140296 * A140298 A140299 A140300
J. Lowell, May 25 2008
a(12)=16 and a(15)-a(52) from Ray Chandler, Nov 10 2009