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=0..18.
Sequence in context: A061081 A007368 A054677 * A013161 A012926 A013157
Adjacent sequences: A012926 A012927 A012928 * A012930 A012931 A012932
Patrick Demichel (patrick.demichel(AT)hp.com)