523600

Appears in sequences

• a(n) = 140*C(2n,n)/(n+4).at n=9A078819
• Numerators in the expansion of the exponential generating function ((1 + 3*x)/x)*(1 - (1 + 3*x)^(-2/3)).at n=7A290597
• a(n) is the n-th term of the n-fold self-convolution of the twice left-shifted tribonacci sequence (A000073).at n=9A341266
• Numbers k such that k*A003557(A003961(k)) divides A353790(k), where A353790(n) = phi(A003973(n)) * A064989(A003973(n)).at n=30A353797
• a(n) is the least number that has exactly n divisors with sum of digits n.at n=13A359444