27909

Appears in sequences

• a(n) = n^3 + (n+1)^3 + (n+2)^3.at n=20A027602
• Signed recurrence over enriched r-trees: a(n) = 2 * (-1)^n + Sum_y Product_{i in y} a(y) where the sum is over all integer partitions of n - 1.at n=34A301469