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A019537 Number of special orbits for dihedral group of degree n. 2
1, 2, 4, 14, 61, 414, 3416, 34274, 394009, 5113712, 73758368, 1170495180, 20263806277, 380048113202, 7676106638884, 166114210737254, 3834434327929981, 94042629562443206, 2442147034770292496, 66942194906543381336, 1931543452346146410965, 58519191359170883258606 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..22.

M. Goebel, On the number of special permutation-invariant orbits and terms, in Applicable Algebra in Engin., Comm. and Comp. (AAECC 8), Volume 8, Number 6, 1997, pp. 505-509 (Lect. Notes Comp. Sci.)

CROSSREFS

Cf. A019536.

Row sums of A273891.

Sequence in context: A047009 A027740 A132880 * A046911 A089127 A132852

Adjacent sequences:  A019534 A019535 A019536 * A019538 A019539 A019540

KEYWORD

nonn

AUTHOR

Manfred Goebel (goebel(AT)informatik.uni-tuebingen.de)

EXTENSIONS

More terms (using A273891) from Alois P. Heinz, Jun 02 2016

STATUS

approved

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Last modified July 22 03:22 EDT 2017. Contains 289648 sequences.