28325

Appears in sequences

• Structured truncated tetrahedral numbers.at n=24A100156
• Third differences of A000219.at n=22A191661
• Hilltop maps: number of nX5 binary arrays indicating the locations of corresponding elements not exceeded by any horizontal or antidiagonal neighbor in a random 0..2 nX5 array.at n=2A218589
• T(n,k)=Hilltop maps: number of nXk binary arrays indicating the locations of corresponding elements not exceeded by any horizontal or antidiagonal neighbor in a random 0..2 nXk array.at n=23A218592
• Hilltop maps: number of 3Xn binary arrays indicating the locations of corresponding elements not exceeded by any horizontal or antidiagonal neighbor in a random 0..2 3Xn array.at n=4A218594
• Expansion of Product_{k>=1} (Product_{j=1..k} 1/(1 - x^(k*j))^j).at n=27A327066
• Odd numbers m for which A379113(m^2) > 1, i.e., k = m^2 has a proper unitary divisor d > 1 such that A048720(A065621(sigma(d)),sigma(k/d)) is equal to sigma(k).at n=43A379122