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..21.
Sequence in context: A239138 A001633 A171120 * A051022 A218556 A043314
Adjacent sequences: A092904 A092905 A092906 * A092908 A092909 A092910