17996

Appears in sequences

• Numbers k such that 265*2^k + 1 is prime.at n=22A053349
• Numbers n of the form k + reverse(k) for exactly three k.at n=36A071914
• a(n) = number of solutions to the Diophantine equation x+y^2+z^3=n^4 with positive x,y,z all distinct.at n=19A121984
• Fixed points of the permutation A087559.at n=26A131221
• A recursive triangular sequence with row sums (5^(n - 1)*(n + 3)!): A(n,k)= A(n - 1, k - 1) + A(n - 1, k) + 5 *(2 + n) (13 + 5* n)*A(n - 2, k - 1).at n=4A153782
• Antidiagonal sums of A147995 and A163545.at n=28A163484
• Total area of the largest inscribed rectangles of all integer partitions of n.at n=23A182099
• Number of n X 3 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 0 1 and 1 1 0 vertically.at n=21A207106
• Triangle of coefficients of polynomials u(n,x) jointly generated with A208752; see the Formula section.at n=60A208751
• Positive integers whose square is the sum of 96 consecutive squares.at n=12A257827
• Convolution of A015723 and A000700.at n=33A274352
• Wiener index of the n X n queen graph.at n=11A292057
• Sum of the even parts in the partitions of n into 4 parts.at n=47A309519
• Number of orderless tree-partitions of a multiset whose multiplicities are the prime indices of n.at n=48A318849
• a(n) = (1/n) * Sum_{k=1..n} k * lcm(k,n).at n=43A344509