0,2

Meier and Moeck, Topology of 3-D 4-connected nets ..., J. Solid State Chem 27 1979 349-355, esp. p. 351.

T. D. Noe, Table of n, a(n) for n=0..1000

Index entries for crystal ball sequences

G.f.: [(1+x)^2(1+x^2)]/[(1-x)^3(1+x+x^2)]. - R. Stephan, Apr 24 2004

Sequence in context: A033617 A033613 A033608 this_sequence A033605 A008137 A008023

Adjacent sequences: A008574 A008575 A008576 this_sequence A008578 A008579 A008580

nonn,easy,nice

N. J. A. Sloane (njas(AT)research.att.com).