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..48.
Sequence in context: A205670 A115428 A172624 * A030002 A238764 A085805
Adjacent sequences: A043877 A043878 A043879 * A043881 A043882 A043883