40680

Appears in sequences

• [ (3rd elementary symmetric function of S(n))/(first elementary symmetric function of S(n)) ], where S(n) = {first n+2 positive integers congruent to 1 mod 4}.at n=14A024386
• Smallest number obtained by placing a + in the first n digits of decimal expansion of Pi.at n=7A085732
• Smallest positive number of "triangular" shuffles of n(n+1)/2 cards needed to restore them to their original order.at n=29A122158
• Principal diagonal of the convolution array A213841.at n=19A213842
• Primitive integer length of the side of an origin-centered square that contains inside its boundary a point with integer coordinates that is an integer distance from three of the four corners.at n=23A215365
• Number of partitions of n in which the largest summand has frequency 1, the next largest summand has frequency at most 2, the third largest has frequency at most 3, etc.at n=46A244395
• a(n) is the smallest number that can be partitioned into n ways as the sum of two brilliant numbers (A078972).at n=40A338474
• Number of non-equivalent ways under symmetry in one axis that 2 non-attacking kings of different colors can be placed on an n X n board.at n=16A357740