26156

Appears in sequences

• a(n) is the concatenation of n and 6n.at n=25A009440
• Base 6 digits are, in order, the first n terms of the periodic sequence with initial period 3,2,1,0.at n=5A037795
• Total number of parts in all compositions of n into distinct odd parts.at n=43A097936
• Triangle read by rows: T(n,k) is the number of series-reduced rooted trees whose leaves are multisets of colors with a total of n elements using exactly k colors.at n=18A330762