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".
Subsequence of A042986 apart from first term; a(n+1)=A042986(n) for n<25.
R. Zumkeller, Table of n, a(n) for n = 1..1000
Cf. A012883, A012884.
Sequence in context: A040065 A051647 A042986 * A038617 A036962 A160337
Adjacent sequences: A143387 A143388 A143389 * A143391 A143392 A143393
Reinhard Zumkeller, Aug 13 2008