1,3
J. V. Knop et al., On the total number of polyhexes, Match, No. 16 (1984), 119-134.
Table of n, a(n) for n=1..10.
See A000228 for another version of this sequence.
Cf. A018190, A038143-A038146.
Sequence in context: A187982 A000228 A108070 * A252784 A082271 A229438
Adjacent sequences: A038144 A038145 A038146 * A038148 A038149 A038150
nonn,hard,more
N. J. A. Sloane.
approved
