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..80.
Sequence in context: A232440 A090329 A224876 * A027352 A029238 A208478
Adjacent sequences: A027350 A027351 A027352 * A027354 A027355 A027356