141960

Appears in sequences

• Theta series of A_7 lattice.at n=20A008447
• a(n) = 5*(n+1)*binomial(n+4,5)/2.at n=11A027801
• Numbers k such that (k-1, k+1) and (k/2-1, k/2+1) are both pairs of twin primes.at n=20A076504
• Composite numbers such that the cube root of the sum of cubes of their prime factors is an integer.at n=7A134608
• Composite numbers such that the cube root of the sum of cubes of their prime factors is a prime.at n=1A134610
• Numbers which are the area of exactly three Pythagorean triangles.at n=17A177021
• a(n) = Carmichael(F(n)), where F(n) are the Fibonacci numbers.at n=34A181091
• a(n) = (Product_{i=0..4}(i*n+2) - Product_{i=0..4}(-i*n-1))/(4*n+3).at n=19A274119
• Fixed points of permutations A275837 & A275838.at n=31A275839
• Number of vertices in a complete bipartite graph where the vertices in the two parts are placed on opposite sides of a parabola at integer y coordinates y = 1, 2, ...n.at n=27A392442