148512

Appears in sequences

• Number of diagonal dissections of a convex n-gon into n-5 regions.at n=6A002056
• Number of partitions of an n-gon into (n-5) parts.at n=5A002060
• a(n) = (n+1)*binomial(n+6,6).at n=11A027818
• Number of diagonal dissections of an n-gon into 7 regions.at n=4A033279
• Triangle read by rows: T(n, k) is the number of diagonal dissections of a convex n-gon into k+1 regions.at n=51A033282
• Numbers that can be expressed as the difference of the squares of primes in exactly eight distinct ways.at n=28A092004
• a(n) = sigma(10^n - 1), where sigma(n) is the sum of positive divisors of n.at n=4A102146
• Triangle read by rows: T(n,k) is the number of Schroeder paths of semilength n containing exactly k peaks but no peaks at level one (n >= 1; 0 <= k <= n-1).at n=48A126216
• Triangle T(n,k), 0 <= k <= n, read by rows, given by [1,1,1,1,1,1,1,...] DELTA [0,1,0,1,0,1,0,1,0,...] where DELTA is the operator defined in A084938.at n=58A133336
• a(n) = (n + 4)*(n + 3)*(n + 2)*(n + 1)*n / 5 = 24*A000389(n+4).at n=13A158874
• Expansion of (eta(q^2)^7 / eta(q^4)^2)^4 + 16 * (eta(q)^2 * eta(q^2) * eta(q^4)^2)^4 in powers of q.at n=20A173763
• Prime(2*n+1)!/(60*prime(2*n-1)!).at n=2A180267
• Numbers with prime factorization pqrst^5.at n=20A190383
• Molecular topological indices of the graph join C_n + C_n of cycle graphs.at n=25A192848
• Integer areas of integer-sided triangles such that the length of two sides are Fibonacci numbers.at n=19A236539
• Cayley's triangle of V numbers; triangle V(n,k), n >= 4, n <= k <= 2*n-4, read by rows.at n=41A259476
• Aliquot sequence starting at 702.at n=12A269542
• Numbers m such that b^sigma(m) == b^phi(m) == b^numdiv(m) == b^m (mod m) for every integer b.at n=43A277173
• Expansion of e.g.f. Product_{k>=1} 1 / (1 - (exp(x)-1)^k)^2.at n=6A316143
• Number of regions formed in a square by straight line segments when connecting the n+1 points along each edge that divide it into n equal parts to the n+1 points on the edge on the opposite side of the square.at n=17A355838