4542615

Appears in sequences

• Denominator of 1/3 + 1/7 + 1/11 + ... + 1/(4n-1).at n=6A074638
• Least common multiple of {3,7,11,...,4n+3}.at n=6A097329
• Minimal number of times a rectangular grid of n X n+1 elements can be slid along a 45-degree line before a rotated version of the initial grid appears.at n=14A110026
• a(n) is the least number k that has exactly n divisors <= sqrt(k) of the form 4*j+3.at n=31A379683
• a(n) is the least number k that has exactly n divisors <= sqrt(k) of the form 4*j+1.at n=32A379693