-6400

Appears in sequences

• Determinant of the n X n matrix whose element (i,j) equals |i-j| (mod 4).at n=9A071769
• Expansion of (1-16*x)/(1-20*x+80*x^2).at n=4A099841
• Triangle read by rows of coefficients of Chebyshev-like polynomials P_{n,2}(x) with 0 omitted (exponents in increasing order).at n=49A136388
• Array: row n shows the coefficients of the characteristic polynomial of the n-th principal submatrix of gcd(i,j) (A003989).at n=36A204025
• Triangle read by rows: coefficients T(n,k) of a binomial decomposition of n^n as Sum(k=0..n)T(n,k)*binomial(n,k).at n=25A244134
• Alternating sum of centered 25-gonal numbers.at n=31A270693
• a(n) = Glaisher's function beta(2n+1).at n=32A322032
• Expansion of e.g.f. exp(-x * (exp(2*x) + 1)).at n=7A356815
• a(1) = 1; a(n) = n^2 * Sum_{d|n, d < n} (-1)^(n/d) a(d) / d^2.at n=39A361987