OFFSET
1,1
COMMENTS
a(6) has 103 decimal digits.
LINKS
Andrew Howroyd, Table of n, a(n) for n = 1..6
Eric Weisstein's World of Mathematics, Sierpinski Gasket Graph.
Eric Weisstein's World of Mathematics, Total Dominating Set.
CROSSREFS
KEYWORD
nonn
AUTHOR
Eric W. Weisstein, Sep 03 2021
EXTENSIONS
Terms a(4) and beyond from Andrew Howroyd, Jan 19 2022
STATUS
approved
