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=0..52.
Sequence in context: A049989 A197056 A104619 * A194101 A105333 A126234
Adjacent sequences: A194034 A194035 A194036 * A194038 A194039 A194040
Clark Kimberling, Aug 12 2011