65884

Appears in sequences

• a(n) = (9*11^n - 1)/2.at n=4A199028
• Coefficients of the polynomials generated by the e.g.f. cosh(x*z)*(x-1)/(x-exp(z*(x-1))), triangle read by rows, T(n,k) for 0 <= k <= n.at n=51A318143
• Denominator of the limiting density of residues attained by the Fibonacci sequence modulo powers of the n-th prime.at n=41A351000
• Table read by rows: row n is the unique primitive Pythagorean triple (a,b,c) such that (a-b+c)/2 = A002378(n) and its long leg and hypotenuse are consecutive natural numbers.at n=37A385022