77044

Appears in sequences

• 10000n+1, 10000n+3, 10000n+7, 10000n+9 are all primes.at n=27A064963
• Symmetric square table of coefficients, read by antidiagonals, where T(n,k) is the coefficient of x^n*y^k in f(x,y) that satisfies: f(x,y) = g(x,y) + xy*f(x,y)^4 and where g(x,y) satisfies: 1 + (x+y-1)*g(x,y) + xy*g(x,y)^2 = 0.at n=58A089447
• Least number x such that x^n has n digits equal to k. Case k = 1.at n=33A285448
• Symmetric difference of the primitive non-deficient numbers and the primitive Zumkeller numbers.at n=29A378538
• Numbers that are primitive Zumkeller, but not primitive non-deficient.at n=20A378657