

A234635


Numbers of directed Hamiltonian paths in the nSierpinski sieve graph.


3




OFFSET

1,1


COMMENTS

Explicit formula and asymptotic are given by Chang and Chen (2011).
a(7) contains 137 decimal digits.


LINKS

Table of n, a(n) for n=1..6.
Eric Weisstein's World of Mathematics, Hamiltonian Path
Eric Weisstein's World of Mathematics, Sierpinski Sieve Graph
S.C. Chang, L.C. Chen. Hamiltonian walks on the Sierpinski gasket, J. Math. Phys. 52 (2011), 023301. doi:10.1063/1.3545358. arXiv:0909.5541


FORMULA

a(n) = A246957(n)*2.


CROSSREFS

Cf. A246957, A246958, A246959
Sequence in context: A139240 A052524 A267032 * A036284 A139235 A184388
Adjacent sequences: A234632 A234633 A234634 * A234636 A234637 A234638


KEYWORD

nonn


AUTHOR

Eric W. Weisstein, Dec 28 2013


EXTENSIONS

a(5)a(6) added by Max Alekseyev, Sep 08 2014


STATUS

approved



