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Euler characteristic of relative homology of some varieties related to cluster algebras of type D.
1

%I #10 Aug 05 2024 15:04:42

%S 4,26,122,572,2754,13372,65350,321314,1587646,7876706,39213336,

%T 195797006,980139194,4917428112,24719569686,124480093754,627818178180,

%U 3170837715984

%N Euler characteristic of relative homology of some varieties related to cluster algebras of type D.

%C The true Euler characteristic alternates in sign. This sequence is the absolute value.

%Y Cf. A171711 (similar sequence in type A).

%K nonn,more

%O 2,1

%A _F. Chapoton_, Jan 30 2013