OFFSET
2,1
COMMENTS
a(n+1) / a(n) tends to 26.65660630533835653493851570574867751479178653672292060740586256111131858... - Vaclav Kotesovec, Nov 24 2020
LINKS
Seiichi Manyama, Table of n, a(n) for n = 2..500
Vaclav Kotesovec, Empirical g.f.
Eric Weisstein's World of Mathematics, Graph Cycle
Eric Weisstein's World of Mathematics, Grid Graph
PROG
CROSSREFS
KEYWORD
nonn
AUTHOR
Seiichi Manyama, Nov 24 2020
STATUS
approved