OFFSET
1,2
COMMENTS
Row sums give A000088, n >= 1.
There are at most A000171(n) odd terms in the n-th row, because complementary graphs have the same number of induced subgraphs. - Pontus von Brömssen, Mar 09 2024
LINKS
Pontus von Brömssen, Table of n, a(n) for n = 1..279 (rows n = 1..9)
FindStat - Combinatorial Statistic Finder, The number of induced subgraphs.
FORMULA
T(n,n) = 2 for n >= 2, because the empty graph and the complete graph are the only n-vertex graphs having only n non-isomorphic induced subgraphs. - Pontus von Brömssen, Mar 09 2024
EXAMPLE
Triangle begins:
1;
2;
2,2;
2,2,5,2;
2,0,1,8,4,10,7,2;
2,0,0,4,4,6,6,14,16,14,22,16,20,16,10,4,2;
...
CROSSREFS
KEYWORD
nonn,tabf
AUTHOR
Christian Stump, Oct 15 2015
EXTENSIONS
a(34) and beyond from Pontus von Brömssen, Mar 09 2024
STATUS
approved