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..73.
Sequence in context: A120615 A038707 A071705 * A109094 A049753 A126326
Adjacent sequences: A190710 A190711 A190712 * A190714 A190715 A190716
Clark Kimberling, May 17 2011