114469

Appears in sequences

• Start with a single square; at n-th generation add a square at each expandable vertex (this is the "vertex to side" version); a(n) is the sum of all label values at n-th generation. (See comment for construction rules.)at n=24A247903
• Expansion of Product_{k>=1} ((1 - x^(3*k))/(1 - x^k))^k.at n=22A263346
• Regular triangle read by rows where T(n, k) is the number of set partitions of {1, ..., n} with no block containing k cyclically successive vertices, n >= 1, 2 <= k <= n + 1.at n=48A323955