86955

Appears in sequences

• Piptorial numbers = product of first n pips or prime-indexed primes.at n=4A080696
• Numbers n such that the middle coefficient of the cyclotomic polynomial Phi_n(x) has a value not obtained for any smaller n.at n=38A095877
• Products of 5 distinct primes a,b,c,d,e, such that a+b+c+d+e are prime numbers.at n=20A178782
• Sum of the smallest parts of the partitions of 4n into 4 parts.at n=28A238702
• a(n) = (Product_{i=0..4}(i*n+2) - Product_{i=0..4}(-i*n-1))/(4*n+3).at n=16A274119
• a(n) = 4*(n-1)*a(n-1) - (1/3)*Product_{k=0..n-1} (2*k-3), with a(0) = 0.at n=6A302117
• Squarefree MM-numbers of strict uniform regular multiset systems spanning an initial interval of positive integers.at n=41A322703
• T(n,m) is the number of m-dimensional isotropic subspaces of a 2n-dimensional symplectic space over Z/2, n >= 0 and 0 <= m <= n.at n=17A368493