Annual Appeal: Please make a donation (tax deductible in USA) to keep the OEIS running. Over 5000 articles have referenced us, often saying "we discovered this result with the help of the OEIS".
See A122618 for notation.
Table of n, a(n) for n=1..69.
Sequence in context: A000010 A003978 A122645 * A028496 A063428 A133439
Adjacent sequences: A122643 A122644 A122645 * A122647 A122648 A122649
N. J. A. Sloane, Sep 21 2006