1,8

Saverio Caminiti and Emanuele G. Fusco, On the Number of Labeled k-arch Graphs, Journal of Integer Sequences, Vol 10 (2007), Article 07.7.5

Cf. A098721-A098724, A131311-A131314.

Sequence in context: A128506 A164655 A036525 this_sequence A159407 A099058 A159415

Adjacent sequences: A131312 A131313 A131314 this_sequence A131316 A131317 A131318

nonn

N. J. A. Sloane (njas(AT)research.att.com), Sep 29 2007