A002203

Sequences linked to this entry ?

• A102413: Triangle read by rows: T(n,k) is the number of k-matchings in the n-sunlet graph (0 <= k <= n). match row sums
  1 · 1, 1 · 1, 4, 1 · 1, 6, 6, 1 … Σ 1, 2, 6, 14, 34, 82, 198, 478, …
  (−∞, 0)nonnegative