43981

Appears in sequences

• Number of partitions satisfying cn(0,5) < cn(1,5) + cn(4,5) + cn(2,5) + cn(3,5).at n=40A039848
• Complete list of numbers that take three steps to collapse to a single digit in base 3 (written in base 10).at n=7A253057
• Numbers with hexadecimal representation A, AB, ABC, ..., ABCDEFA, ABCDEFAB, ...at n=3A346458
• a(n) = Sum_{1 <= x_1, x_2, x_3, x_4 <= n} ( n/gcd(x_1, x_2, x_3, x_4, n) )^2.at n=5A372963