1,2
Number of labeled trees on p(n) nodes, where p(n) is the n-th prime.
Table of n, a(n) for n=1..10.
a(n) = A000272(A000040(n)).
(MAGMA) [n^(n-2) : n in [2..40] | IsPrime(n)];
Cf. A000040, A000272, A036878.
Sequence in context: A219010 A037118 A085531 * A114877 A152859 A157547
Adjacent sequences: A130611 A130612 A130613 * A130615 A130616 A130617
easy,nonn
Jonathan Vos Post, Jun 18 2007
approved