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A213451 Number of fixed triangular strip polyedges with n edges.
(Formerly N1209)
0
3, 15, 69, 309, 1365, 5973, 25941, 112065, 482067, 2066583, 8834469, 37677603, 160367343 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

REFERENCES

N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).

LINKS

Table of n, a(n) for n=1..13.

C. Domb, On the theory of cooperative phenomena in crystals, Advances in Phys., 9 (1960), 149-361. See page 354.

CROSSREFS

Cf. A151540, A151541.

Sequence in context: A052981 A086200 A217451 * A224749 A122558 A110211

Adjacent sequences:  A213448 A213449 A213450 * A213452 A213453 A213454

KEYWORD

nonn,more

AUTHOR

N. J. A. Sloane, Jun 11 2012

EXTENSIONS

Better description and more terms from Joseph Myers, Jun 12 2012

STATUS

approved

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Last modified September 22 00:25 EDT 2017. Contains 292326 sequences.