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A211166
Euler characteristic of relative homology of some varieties related to cluster algebras of type D.
1
4, 26, 122, 572, 2754, 13372, 65350, 321314, 1587646, 7876706, 39213336, 195797006, 980139194, 4917428112, 24719569686, 124480093754, 627818178180, 3170837715984
OFFSET
2,1
COMMENTS
The true Euler characteristic alternates in sign. This sequence is the absolute value.
CROSSREFS
Cf. A171711 (similar sequence in type A).
Sequence in context: A147621 A246854 A267847 * A245460 A261738 A363648
KEYWORD
nonn,more
AUTHOR
F. Chapoton, Jan 30 2013
STATUS
approved