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..24.
Sequence in context: A096977 A084098 A263547 * A178138 A220888 A038607
Adjacent sequences: A152816 A152817 A152818 * A152820 A152821 A152822
Vladimir Shevelev, Dec 13 2008