219960

Appears in sequences

• 1/a(n) is the area of the smallest triangle delimited by 3 lines each passing through at least 2 points of an n X n unitary spaced grid.at n=6A234566
• Expansion of Product_{k>=1} (1-x^k)*(1+x^k)^4.at n=38A261998
• Number of ways to write n as an ordered sum of 9 primes.at n=28A340965
• a(n) is the smallest number k >= 1 with exactly n divisors d, for which sigma(k) is divisible by d*sigma(d).at n=29A344103