16581375
domain: N
Appears in sequences
- a(n) = (9*n + 3)^3.at n=28A017199
- a(n) = (10*n + 5)^3.at n=25A017331
- a(n) = (11*n + 2)^3.at n=23A017415
- a(n) = (12*n + 3)^3.at n=21A017559
- j-invariants for orders of class number 1.at n=9A032354
- a(n) = (4*n^2 - 1)^3.at n=7A069076
- Triangle, read by rows, where T(n,k) equals the sum of cubes of numbers < 2^n having exactly k ones in their binary expansion.at n=35A110205
- Cubes for which the sum of the digits is a square.at n=25A117688
- Number of n-tuples where each entry is chosen from the subsets of {1,2,3} such that the intersection of all n entries is empty.at n=7A128831
- Products of cubes of 3 distinct primes.at n=24A162144
- a(n) = Product_{i=0..2} (2^floor((n+i)/3)-1).at n=24A274626
- Cubes c such that c + 2 and c - 2 are semiprime.at n=23A275023
- Let s(D) = Sum_{(a,b,c)} j((-b+sqrt(D))/(2*a)) where (a,b,c) is taken over all the primitive reduced binary quadratic forms a*x^2+b*xy+c*y^2 with b^2-4*ac = D. This sequence is s(D) as D runs through the numbers -3, -4, -7, -8, -11, -12, ... .at n=13A305494