A256982 Number of benzenoid graphs with n hexagonal faces and forcing number 1.

1, 1, 2, 6, 15, 51, 190, 767, 3256, 14420, 65298, 301920, 1416398, 6730574, 32315128

Offset

1,3

Links

Table of n, a(n) for n=1..15.

C. E. Larson and N. Van Cleemput, Forcing Independence, Croatica Chemica Acta, Vol. 86, No. 4, Dec. 2013, 469-475.

Crossrefs

Sequence in context: A368411 A255540 A323926 * A047870 A027287 A192186

Adjacent sequences: A256979 A256980 A256981 * A256983 A256984 A256985

Keyword

nonn,more

Author

N. J. A. Sloane, Apr 24 2015

Status

approved