Annual Appeal: Please make a donation (tax deductible in USA) to keep the OEIS running. Over 4500 articles have referenced us, often saying "we would not have discovered this result without the OEIS".
Table of n, a(n) for n=1..30.
Sequence in context: A129330 A045950 A226796 * A055586 A054489 A219580
Adjacent sequences: A060998 A060999 A061000 * A061002 A061003 A061004
N. J. A. Sloane, May 15 2001