19381

Properties

Appears in sequences

• Prime(n)*...*a(n) is the least product of consecutive primes which is non-deficient.at n=31A007686
• Prime(n)*...*a(n) is the least product of consecutive primes which is abundant.at n=31A007708
• Sums of 5 distinct powers of 5.at n=15A038477
• Number of labeled chains with n edges.at n=5A048174
• Duplicate of A048174.at n=5A058350
• a(0) = 10; for n>0, a(n) = n*a(n-1)-n-2.at n=7A068444
• Primes which can be expressed as sum of distinct powers of 5.at n=9A077719
• a(n) = floor(11^n/8^n).at n=31A094995
• Maximal number of 15432 patterns in a permutation of 1,2,...,n.at n=23A100355
• Numbers n such that p(10n) is prime, where p(n) is the number of partitions of n.at n=28A114170
• Number of Section I primes between 2^n and 2^(n+1). See A135832.at n=42A135833
• Primes congruent to 36 mod 53.at n=37A142566
• Primes congruent to 44 mod 61.at n=33A142842
• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 1), (-1, 0, 0), (-1, 1, -1), (-1, 1, 1), (1, 0, 0)}.at n=10A148533
• Primes of the form x^2 + 5*y^2, where x and y=x+1 are consecutive natural numbers.at n=16A176608
• Primes p such that 2*p + 47 is a square.at n=40A269788
• Prime numbersat n=2194