30913

Appears in sequences

• Centered octahedral numbers (crystal ball sequence for cubic lattice).at n=28A001845
• Number of intersections of diagonals in the interior of a regular n-gon.at n=31A006561
• a(n) = (9*n^3 + 5*n)/2.at n=18A230018
• Number of (n+1) X (1+1) 0..2 arrays with the maximum plus the lower median minus the upper median of every 2 X 2 subblock differing from its horizontal and vertical neighbors by exactly one.at n=4A237465
• Number of (n+1)X(5+1) 0..2 arrays with the maximum plus the lower median minus the upper median of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one.at n=0A237469
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with the maximum plus the lower median minus the upper median of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one.at n=10A237472
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with the maximum plus the lower median minus the upper median of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one.at n=14A237472
• Number of nX4 0..1 arrays with every element unequal to 0, 1, 2 or 7 king-move adjacent elements, with upper left element zero.at n=14A304226
• Number of integer partitions of n whose rounded mean is > 1. Partitions with mean >= 3/2.at n=39A364059