20095

Appears in sequences

• Index k in A095773 where a string of n identical values occurs.at n=29A096183
• First differences of A047780.at n=9A100790
• Number of (5+1) X (n+1) 0..1 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing min(x(i,j),x(i-1,j)) in the j direction.at n=32A250659
• Numbers n such that n^3 contains the consecutive substring 2,3,5,7.at n=18A295900
• a(n) = a(n-1) + a(n-2) + 2 a([(n-1)/2]), where a(0) = 1, a(1) = 1, a(2) = 1.at n=19A298354
• a(1) = 1; a(n+1) = Sum_{d|n} tau(d)*a(d), where tau = number of divisors (A000005).at n=10A307793
• Smallest n-digit number e such that there exists a primitive Pythagorean n-digit quintuple (a,b,c,d,e) with 10^(n-1) <= a < b < c < d < e < 10^n.at n=4A380729