34648

Appears in sequences

• Number of 5-tuples of different integers from [ 2,n ] with no common factors among quadruples.at n=23A015645
• Number of powerful numbers not exceeding 2^n.at n=28A062762
• Number of walks within N^2 (the first quadrant of Z^2) starting at (0,0), ending on the vertical axis and consisting of n steps taken from {(-1, 0), (0, -1), (0, 1), (1, -1)}.at n=12A151404
• S(n) - the sum of the areas of the polygons constructed from connecting with a straight line all identical members in the multiplicative table modulo n (finite field).at n=35A157023
• Half the difference between the larger and smaller term of the n-th amicable pair.at n=30A162884
• Number of nX4 0..1 arrays with the counts of all possible adjacent horizontal and vertical pair sum values being within one of each other.at n=5A203634
• Number of nX6 0..1 arrays with the counts of all possible adjacent horizontal and vertical pair sum values being within one of each other.at n=3A203636
• T(n,k)=Number of nXk 0..1 arrays with the counts of all possible adjacent horizontal and vertical pair sum values being within one of each other.at n=39A203638
• T(n,k)=Number of nXk 0..1 arrays with the counts of all possible adjacent horizontal and vertical pair sum values being within one of each other.at n=41A203638
• Half the difference between the larger and smaller terms of the n-th amicable pair (x,y) given in A259933.at n=30A275470
• Number of partitions of [n] into blocks whose largest element is >= the sum of the remaining block elements.at n=10A375677