250880

Appears in sequences

• Triangle whose (i,j)-th entry is binomial(i,j)*7^(i-j)*8^j.at n=18A038274
• Triangle whose (i,j)-th entry is binomial(i,j)*8^(i-j)*7^j.at n=17A038285
• a(n) = gcd(d(n!^3), d(n!)), where d() is the number of divisors function.at n=44A069783
• Quintisection and binomial transform of 1/(1-x^4-x^5).at n=18A099131
• Consider the list s(1), s(2), ... of numbers that are products of exactly n primes; a(n) is the smallest s(j) whose decimal expansion ends in j.at n=13A186000
• Number of length n+4 0..7 arrays with every five consecutive terms having two times the sum of some three elements equal to three times the sum of the remaining two.at n=8A248986
• a(n) is the least number with exactly n divisors of the form 3*k+2.at n=33A364583
• a(n) = 4*a(n-1) - 6*a(n-2) + 4*a(n-3) - a(n-4) + a(n-5) with a(1) = a(2) = a(3) = 0, a(4) = 1, and a(5) = 3.at n=23A385142
• a(n) = Sum_{k=0..floor(n/2)} binomial(k,2*(n-2*k)).at n=45A392250