352000

Appears in sequences

• Numbers k that divide the (left) concatenation of all numbers <= k written in base 21 (most significant digit on left).at n=18A029490
• a(n) = S1(n,2), where S1(n, t) = Sum_{k=0..n} (k^t * Sum_{j=0..k} binomial(n,j)).at n=10A089659
• Numbers n such that n = k/d(k) has exactly 5 solutions, where d(k) = number of divisors of k.at n=2A217126
• Number of (n+1) X (3+1) 0..5 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 5, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings).at n=7A235181
• a(1)=2, a(2)=3; a(n) is the smallest k > a(n-1) such that k + a(n-1) is a multiple of a(n-2).at n=35A328724
• Irregular triangle T(n,k) read by rows in which n-th row lists in colex order all series-reduced tree degree sequences D of n nodes encoded as t = Product_{d in D} prime(d); n >= 4, 1 <= k <= A002865(n-2).at n=38A345970