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A374773
a(n):= #G_{2n}(3n+1) for n >= 1, where G_{2n}(3n+1) is the set of all pure (2n)-sparse gapset of genus 3n+1 and n a positive integer.
1
3, 8, 22, 54, 135, 331, 808
OFFSET
1,1
LINKS
Gilberto B. Almeida Filho and Matheus Bernardini On pure kappa-sparse gapsets, Semigroup Forum, Vol. 104 (2022), pp. 213-227.
Gilberto Brito and Stéfani Vieira, A certain sequence on pure kappa-sparse gapsets, arXiv:2407.21563 [math.CO], 2024. See pp. 1-2.
CROSSREFS
Cf. A348619.
Sequence in context: A027235 A086596 A036882 * A020962 A027243 A110239
KEYWORD
nonn,hard,more
AUTHOR
STATUS
approved