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A020872 Number of restricted forests in Moebius ladder M_n. 0
34, 241, 1582 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,1

LINKS

Table of n, a(n) for n=2..4.

J. P. McSorley, Counting structures in the Moebius ladder, Discrete Math., 184 (1998), 137-164.

FORMULA

For large n, (4.8820)^n < a(n) < (6.4188)^n (Th. 10.1.). - C. Ronaldo (aga_new_ac(AT)hotmail.com), Jan 17 2005

CROSSREFS

Sequence in context: A055716 A233300 A281052 * A302474 A183319 A190422

Adjacent sequences:  A020869 A020870 A020871 * A020873 A020874 A020875

KEYWORD

nonn,more,bref

AUTHOR

N. J. A. Sloane

STATUS

approved

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Last modified January 16 23:44 EST 2019. Contains 319206 sequences. (Running on oeis4.)