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".
Table of n, a(n) for n=1..48.
Sequence in context: A098714 A108938 A085236 * A082801 A261435 A103590
Adjacent sequences: A068564 A068565 A068566 * A068568 A068569 A068570
Reinhard Zumkeller, Mar 25 2002