73360

Appears in sequences

• Number of 3 X 3 matrices with elements from [0,...,(n-1)] satisfying the condition that the middle element of each row or column is the difference of the two end elements (in absolute value).at n=19A058333
• Structured triakis octahedral numbers (vertex structure 4).at n=27A100171
• a(n) = n*(n + 1)*(5*n^2 + 5*n - 4)/12.at n=20A264853
• Smaller of bi-unitary amicable pair.at n=19A292980
• Numbers that have exactly 7 representations as a k-gonal number, P(n,k) = n*((k-2)*n - (k-4))/2, k and n >= 3.at n=13A321157