25070

Appears in sequences

• Numbers k that can be expressed as k = w + x = y*z with w*x = y^3 + z^3 where w, x, y, and z are all positive integers.at n=36A057372
• McKay-Thompson series of class 34a for the Monster group.at n=44A058639
• Numbers n such that sigma(n)/phi(n) is prime.at n=36A067780
• Squarefree balanced numbers (i.e., squarefree members of A020492).at n=40A078557
• Number of partitions of n which contain their signature as a subpartition.at n=39A118052
• Numbers such that Sigma(m)*UnitarySigma(m)= k*UnitaryPhi(m)^2, for some integer k.at n=46A122839
• Numbers k such that 6*p(k)*p(k+1)*p(k+2)*p(k+3)*p(k+4)*p(k+5)-1 and 6*p(k)*p(k+1)*p(k+2)*p(k+3)*p(k+4)*p(k+5)+1 are twin primes with p(h) = h-th prime.at n=32A129311
• Numbers n such that sigma(n) = 5*phi(n).at n=8A136547
• Central moment sequence of tr(A^2) in USp(6).at n=11A138542
• Number of -3..3 arrays x(0..n-1) of n elements with sum zero and with zeroth through n-1st differences all nonzero.at n=7A200033
• T(n,k)=Number of -k..k arrays x(0..n-1) of n elements with sum zero and with zeroth through n-1st differences all nonzero.at n=52A200038
• Number of partitions p of n such that median(p) < multiplicity(min(p)).at n=41A240212
• Numbers k such that (38*10^k + 637)/9 is prime.at n=28A271375
• Numbers k such that 465*2^k+1 is prime.at n=33A318193
• Products of four distinct primes between sphenic numbers (products of 3 distinct primes).at n=17A351382