25092

Appears in sequences

• Self-convolution of composite numbers.at n=36A023648
• a(n) = n*(2*n^2 - 3*n + 4)/3.at n=34A037235
• a(n) = 3*(n - 2)*(5*n -11).at n=41A060785
• a(n) = 9*(n-2)*(5*n-13)*(5*n^2 - 19*n + 16)/2.at n=4A060786
• Duplicate of A060786.at n=4A064196
• Expansion of sqrt(2/Pi*EllipticK(4*sqrt(x))).at n=5A089624
• Triangle read by rows: T(n,k) is number of paths from (0,0) to (3n,0) that stay in the first quadrant (but may touch the horizontal axis), consisting of steps u=(2,1), U=(1,2), or d=(1,-1) and have k triple descents (i.e., ddd's).at n=43A108443
• Number of compositions of n into parts {3,4,5} when all parts 3,4 and 5 are present.at n=29A243254
• Number of nX4 0..1 arrays with every element unequal to 0, 1, 3 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.at n=9A318033
• Number of permutations of [n] where the length of the longest increasing subsequence is larger than or equal to the length of the longest decreasing subsequence.at n=7A321315
• a(n) is the smallest number that can be partitioned into n ways as the sum of two Moran numbers.at n=41A337862
• Number of SAWs crossing a rhomboidal domain of the hexagonal lattice.at n=3A356610
• Integers k such that there are i groups of order k+i up to isomorphism, for i=1,2,3.at n=18A373649