1,1

Table of n, a(n) for n=1..81.

Sequence in context: A098593 A144431 A053821 * A162246 A277447 A333698

Adjacent sequences: A076542 A076543 A076544 * A076546 A076547 A076548

easy,nonn

Zak Seidov, Oct 19 2002

approved