124729

Appears in sequences

• a(n) = (2*n-1)*(3*n-1)*(4*n-1)*(5*n-1).at n=6A033590
• a(n) = n-th sextic factorial number divided by 5.at n=4A034787
• a(n) = Product of k primes in arithmetic progression with common difference 6, otherwise a(n) = prime(n).at n=3A120313
• Number of partitions of n which have nonconstant reversal sums, as defined in Comments.at n=46A236170
• a(n) = n! * [x^n] exp(n*x)*(sec(x) + tan(x)).at n=6A292976
• a(n) = numerator(b(n)), where b(0) = b(1) = 1 and b(n) = n*b(n-1)/b(n-2) for n >= 1.at n=30A329654
• a(n) = Product_{k in GB(2*n)} k, where GB(n) is the set of primes which are Goldbach-associated with n.at n=35A338777
• Number of integer partitions of n whose parts do not have the same mean as median.at n=47A359894
• 4-brilliant numbers with distinct prime factors.at n=23A376864
• Numbers k >= 0 such that the interval [A000217(k), A000217(k + 1)] contains at least one Fibonacci number (A000045).at n=48A388653
• Number of integer partitions of n whose parts are not in arithmetic progression.at n=47A389811