235092

Appears in sequences

• Number of ways of placing n labeled balls into 3 indistinguishable boxes with at least 2 balls in each box.at n=7A000478
• Triangle T(n,k) of associated Stirling numbers of second kind, n >= 2, 1 <= k <= floor(n/2).at n=38A008299
• Number of planar n X n X n binary triangular grids symmetric both under 120 degree rotation and reflection with no more than 2 ones in any 5 X 5 X 5 subtriangle.at n=25A153919