25009

Appears in sequences

• a(n) = ( (8 + sqrt(7))^n - (8 - sqrt(7))^n )/(2*sqrt(7)).at n=4A154249
• a(n) = A168174(n)-10^12.at n=30A168248
• Numbers k that are the products of two distinct primes such that 2*k-1, 4*k-3, 8*k-7, 16*k-15 and 32*k-31 are also products of two distinct primes.at n=33A177214
• Numbers k that are the products of two distinct primes such that 2*k-1, 4*k-3, 8*k-7, 16*k-15, 32*k-31 and 64*k-63 are also products of two distinct primes.at n=14A177215
• Number of partitions of n such that (number parts having multiplicity 1) is not a part and (number of parts > 1) is not a part.at n=45A241514
• Numbers k such that (25*10^k - 13)/3 is prime.at n=22A281142
• a(n) = ceiling(Fibonacci(n)/3).at n=25A293543
• a(n) = number of primes that end in 9 among the first 10^n primes.at n=4A300400
• Number of nonnegative integer matrices with sum of entries equal to n and no zero rows or columns, whose nonzero entries are all distinct.at n=14A321659