A119642 Indices of prime numbers of trees with n unlabeled nodes.

4, 5, 7, 8, 9, 13, 15, 52, 82, 134, 216, 341, 538, 1414, 17306, 17582

Offset

1,1

Comments

No other terms below 40000. - Vaclav Kotesovec, Jul 08 2020

Links

Table of n, a(n) for n=1..16.

Formula

A000055(a(n)) = A119641(n). - Amiram Eldar, Apr 22 2018

Crossrefs

Cf. A000055, A051420, A119641, A336042.

Sequence in context: A047494 A080712 A005048 * A276705 A168044 A248188

Adjacent sequences: A119639 A119640 A119641 * A119643 A119644 A119645

Keyword

nonn,more

Author

Jorge Coveiro, Jul 27 2006

Extensions

Offset changed by Michel Marcus, Apr 22 2018

a(13)-a(16) from Amiram Eldar, Apr 22 2018

Status

approved