129402

Appears in sequences

• a(n) = n*(n-1)*(n+1)*(3*n-2)/12.at n=26A153978
• Averages of twin prime pairs of the form : sum of two or more consecutive squares.at n=34A174716
• Number of n X 5 0..1 arrays with rows unimodal and antidiagonals nondecreasing.at n=6A224406
• Number of 7Xn 0..1 arrays with rows unimodal and antidiagonals nondecreasing.at n=4A224414
• Irregular triangle read by rows: T(n,k) = number of size k subsets of S_n that remain unchanged by a rotation of 90 degrees.at n=58A277085
• Expansion of e.g.f. (1/x) * Series_Reversion( x/(1 + x^2*exp(x)) ).at n=7A371018