20862

Appears in sequences

• a(n) = 3*n^3 + n^2 - 4*n.at n=19A083127
• Numbers n such that 2*n*k(n) is rational but not an integer, where k(n) is sum of successive remainders when computing the Euclidean algorithm for (1, 1/sqrt(n)) as defined in A086378 (MuPAD program is given there); numbers belonging to A086378 but not to A088900.at n=13A087414
• Increasing gaps in A038593 (upper terms).at n=13A093362
• Difference between successive primes cubed: a(n) = prime(n+1)^3 - prime(n)^3.at n=10A129701
• The number of even separable permutations of length n.at n=8A165328
• Coefficients of a generalized Jaco-Lucas polynomial (odd indices) read by rows.at n=51A200073
• Number of 8 X (n+1) 0..1 arrays with every 2 X 2 subblock having the same number of equal edges as its horizontal neighbors and a different number from its vertical neighbors, and new values 0..1 introduced in row major order.at n=5A208089
• a(n) = (2*n+23)*n*(n-1), a coefficient appearing in the formula a(n)*Pi/324+n+1 giving the average number of regions into which n random planes divide the cube.at n=19A248598
• Lengths of runs of identical terms in A253415.at n=33A253425
• Triples of practical numbers: numbers n such that n-2, n, n+2 are all practical numbers.at n=23A287682
• a(n) = prime(n)*prime(n+1) + prime(n+2).at n=33A292926
• a(n) = 9*n^2 + 21*n - 6 (n>=1).at n=46A304374
• a(n) = Sum_{j=1..n*(n-1)} (n*j mod (n+j)).at n=15A309341
• Number of partitions of n with rank a multiple of 6.at n=46A363238