75168

Appears in sequences

• Number of solutions of x^6=1 in general affine group AGL(n,2).at n=3A063389
• Suppose e<f, e<h, g<f and g<h. To avoid fegh means not to have four consecutive letters such that the second and the third letters are less than the first and the fourth letters.at n=9A177482
• Numbers with prime factorization pq^4r^5.at n=14A190468
• Numbers k such that phi(6k) is either phi(6k-2) or phi(6k+2), where phi is Euler's totient function A000010.at n=23A279011
• Numbers k such that phi(6k) = phi(6k+2), where phi is Euler's totient function A000010.at n=8A279184
• Number of 2 X 2 matrices having entries in {0,1,...,n} and determinant in the open interval (-n,n) with no entry repeated.at n=30A279273
• p-INVERT of (1,1,0,0,0,0,...), where p(S) = (1 - 6 S)^2.at n=4A291391
• Numbers with an even number of prime factors (counted with multiplicity) that can be factored into squarefree semiprimes (A320911) but cannot be factored into distinct semiprimes (A320892).at n=24A320893
• Number of integer partitions of n with reverse-alternating sum >= 0.at n=48A344607
• Number of integer partitions of 2n with reverse-alternating sum >= 0.at n=24A344611
• a(n) = coefficient of 2^(1/3) in the expansion of (2^(1/3) + 2^(2/3))^n.at n=12A377118