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=1..53.
Sequence in context: A117360 A074821 A076707 * A064419 A032543 A140730
Adjacent sequences: A032937 A032938 A032939 * A032941 A032942 A032943