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A218922 Number of incidences in the poset of conjugacy classes of subgroups of the alternating group. 2
1, 1, 1, 3, 13, 32, 128, 330, 2309, 4271, 12468, 33329, 196182, 490137 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,4

LINKS

Table of n, a(n) for n=0..13.

Liam Naughton, CountingSubgroups.g.

Liam Naughton and Goetz Pfeiffer, Integer sequences realized by the subgroup pattern of the symmetric group, arXiv:1211.1911 [math.GR], 2012.

Liam Naughton and Goetz Pfeiffer, Integer sequences realized by the subgroup pattern of the symmetric group, Journal of Integer Sequences, Vol. 16, (2013), Article 13.5.8.

Liam Naughton and Goetz Pfeiffer, Tomlib, The GAP table of marks library.

CROSSREFS

Cf. A218921.

Sequence in context: A247216 A301926 A211800 * A061938 A168375 A032586

Adjacent sequences:  A218919 A218920 A218921 * A218923 A218924 A218925

KEYWORD

nonn,more

AUTHOR

Liam Naughton, Nov 12 2012

STATUS

approved

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Last modified May 26 17:16 EDT 2020. Contains 334630 sequences. (Running on oeis4.)