45507

Appears in sequences

• a(n) = Sum_{k=0..n} (k+1) * A026725(n, k).at n=12A027211
• Sum k!, where sum is over positive integers k <= n with gcd(k,n) = 1.at n=8A057795
• a(n) is the least positive integer k such that g(k) = n*g(k-1), where g(k) = prime(k+1) - prime(k).at n=32A078563
• A sixth-order linear divisibility sequence related to the Pell numbers: a(n) := (1/60)*Pell(3*n)*Pell(4*n)/Pell(n).at n=2A238602
• Number of n X 4 binary arrays with rows and columns lexicographically nondecreasing and row and column sums nonincreasing.at n=40A266543
• Consecutive internal states of the linear congruential pseudo-random number generator (421*s + 54773) mod 259200 when started at 1.at n=22A383129