1098826

Appears in sequences

• a(n) = a(n-1) + Sum_{k=0..n/3} a(n-3k) with a(0)=1.at n=33A113435
• First row of A113435.at n=11A113436
• Irregular triangle read by rows: T(n,k) = number of independent vertex subsets of size k of the graph g_n obtained by attaching two pendant edges to each vertex of the ladder graph L_n (i.e., L_n is the 2 X n grid graph; 0 <= k <= 4n+1).at n=54A235117
• Irregular triangle read by rows: T(n,k) = number of independent vertex subsets of size k of the graph g_n obtained by attaching two pendant edges to each vertex of the ladder graph L_n (i.e., L_n is the 2 X n grid graph; 0 <= k <= 4n+1).at n=56A235117