264992

Appears in sequences

• Number of n X n matrices over GF(3) with rank 1.at n=5A060868
• Numbers n such that sum of the squares of the prime factors of n equals the sum of the squares of the digits of n.at n=19A067184
• Table T(n,k) = -2*T(n-1,k)+T(n-1,k+1) = T(n,k-4), 0<=n.at n=48A140287
• First quadrisection of A140287.at n=12A140289
• Number of ways to place 2 nonattacking queens on an n X n toroidal board.at n=27A172517
• Numbers with prime factorization p^2*q^2*r^5 where p, q, and r are distinct primes.at n=18A190114
• a(n) = n^4 + 2^4 + (n+2)^4.at n=18A190176
• Numbers that are the sum of three biquadrates (fourth powers) in more than one way.at n=17A193244
• Numbers whose square is both a sum and a difference of two positive cubes.at n=34A230716
• Numbers k such that there is an anti-divisor d of k satisfying sigma(d) = k.at n=18A286917
• Numbers that are the sum of 3 nonzero 4th powers in more than one way.at n=27A309762
• Numbers that are the sum of three fourth powers in exactly two ways.at n=27A344192
• a(n) = phi(7^n-1), where phi is Euler's totient function (A000010).at n=6A366635
• a(n) is phi(n^n-1) where phi is the Euler totient function.at n=5A366821
• Array read by ascending antidiagonals: A(n, k) = (k^n - 1)^2/(k - 1), with k >= 2.at n=29A379587