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..73.
Sequence in context: A047383 A133795 A247060 * A145285 A222802 A215284
Adjacent sequences: A190705 A190706 A190707 * A190709 A190710 A190711
Clark Kimberling, May 17 2011