OFFSET
3,1
LINKS
Christian Sievers, Table of n, a(n) for n = 3..1000
Eric Weisstein's World of Mathematics, Dominating Set
Eric Weisstein's World of Mathematics, Double Cone Graph
FORMULA
a(n) = 4^n + A001644(n)^2. - Christian Sievers, Jun 13 2024
PROG
(PARI) a(n)=4^n+polsym(1+x+x^2-x^3, n)[n+1]^2 \\ Christian Sievers, Jun 13 2024
CROSSREFS
KEYWORD
nonn
AUTHOR
Eric W. Weisstein, Sep 10 2023
EXTENSIONS
a(14)-a(15) from Eric W. Weisstein, Feb 09 2024
a(16) and beyond from Christian Sievers, Jun 13 2024
STATUS
approved