1,2
Table of n, a(n) for n=1..5.
Sequence in context: A253646 A004249 A268210 * A132346 A284530 A041293
Adjacent sequences: A121507 A121508 A121509 * A121511 A121512 A121513
nonn
Daniel Asimov (dasimov(AT)earthlink.net), Sep 17 2006
approved