Invitation: celebrating 50 years of OEIS, 250000 sequences, and Sloane's 75th, there will be a conference at DIMACS, Rutgers, Oct 9-10 2014.
%Y Cf. A082782, A088771-A088779.
%A _Ray Chandler_, Oct 26 2003
%E a(5) from _Max Alekseyev_, Feb 12 2012