393115

Appears in sequences

• Start with a single hexagon; at n-th generation add a hexagon at each expandable vertex; a(n) is the sum of all label values at n-th generation. (See comment for construction rules.)at n=15A247620
• a(0) = 0; thereafter a(n) = a(n-1)/2 + n if a(n-1) is even, otherwise a(n) = a(n-1) + a(n-2).at n=47A350129