1,2
Table of n, a(n) for n=1..72.
Cf. A068935, A068936, A054411, A068938.
Sequence in context: A118065 A020661 A284837 * A285316 A182768 A207481
Adjacent sequences: A068934 A068935 A068936 * A068938 A068939 A068940
nonn
Reinhard Zumkeller, Mar 08 2002
More terms from David Wasserman, Jun 17 2002
approved