3110400

Appears in sequences

• Values of phi in arithmetic progression of at least 6 terms having the same value of phi in A050518.at n=19A050520
• Values of phi in arithmetic progression of at least 6 terms having the same value of phi in A050518.at n=21A050520
• For n >= 1 a(n) is the number of permutations in the symmetric group S_n such that their cycle decomposition contains no 7-cycle.at n=10A060727
• a(n) = 6*(2*n)!/(n+2).at n=5A064335
• Numbers n such that uphi(uphi(n)) = n/2.at n=15A071008
• Number of pairs of orthogonal Latin squares of order n.at n=4A072377
• a(n) = (n!)^2*n.at n=6A084915
• Euler's totient of A104350(n).at n=12A104354
• Coefficient array of numerator polynomials of o.g.f.s (rising powers) for the columns of triangle A008517 (second-order Eulerian numbers).at n=34A112692
• Number of spanning trees in G X P_n, where G = {{1, 2}, {1, 3}, {1, 4}, {2, 5}, {3, 5}, {4, 5}}.at n=2A167072
• a(n) = A002952(n) + A002953(n).at n=27A180277
• Triangle read by rows: T(n,k) (n>=1, 1 <= k <= n) = number of permutations of [1..n] in which none of the cycle lengths are divisible by k.at n=51A213280
• Number of permutations on n points admitting a seventh root.at n=10A215718
• Product of the first n perfect powers (A001597).at n=7A380318
• Partial products of the sequence nonprime powers of primes (A025475).at n=6A385380