login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A347724
Number of irredundant sets in the n-triangular grid graph.
2
2, 4, 17, 102, 925, 12508, 274369, 8955595, 447311286, 34069625935, 3993234239468
OFFSET
0,1
LINKS
Eric Weisstein's World of Mathematics, Irredundant Set
Eric Weisstein's World of Mathematics, Triangular Grid Graph
CROSSREFS
Sequence in context: A212581 A305786 A009319 * A009323 A307125 A247260
KEYWORD
nonn,more
AUTHOR
Eric W. Weisstein, Sep 11 2021
EXTENSIONS
Missing a(0) inserted and a(7)-a(10) from Andrew Howroyd, Jan 19 2022
STATUS
approved