76230

Appears in sequences

• a(n) = (n^1 + 1!)*(n^2 + 2!)*(n^3 + 3!)*(n^4 + 4!)/2!.at n=3A131528
• Numbers with exactly 5 distinct prime divisors {2,3,5,7,11}.at n=25A147572
• Table read by antidiagonals in which entry T(n,k) in row n and column k gives the number of possible rhombus tilings of an octagon with interior angles of 135 degrees and sequences of side lengths {n, k, 1, 1, n, k, 1, 1} (as the octagon is traversed), n,k in {1,2,3,...}.at n=39A214457
• Table read by antidiagonals in which entry T(n,k) in row n and column k gives the number of possible rhombus tilings of an octagon with interior angles of 135 degrees and sequences of side lengths {n, k, 1, 1, n, k, 1, 1} (as the octagon is traversed), n,k in {1,2,3,...}.at n=41A214457
• Denominators of Integral_{x=0..Pi/2} sin(2*n*x)*log(cosec(x)) dx.at n=11A225123
• Table read by rows, in which the n-th row lists all the primitive solutions k, in increasing order, such that k*sigma(k) = A337875(n).at n=38A337876
• a(n) = Sum_{k=0..n} binomial(n,k) * binomial(k^2, n).at n=5A346184
• Triangle T(n, m) = binomial(n+2, m)*binomial(n+2, n-m), read by rows.at n=48A348539
• Triangle T(n, m) = binomial(n+2, m)*binomial(n+2, n-m), read by rows.at n=51A348539
• Number of edges in the n-Pell graph.at n=11A364553
• a(n) is the least number x such that x^2 + 1 and 2^x + 1 are both divisible by A387595(n).at n=41A387642