39004

Appears in sequences

• a(n) = (5*n+1)*(5*n+4).at n=39A001545
• Numbers k such that 81^k - 9^k - 1 is prime.at n=12A265487
• Expansion of Product_{k>=1} 1/(1 - 4*k*x^k).at n=7A265975
• Number of vertices among all distinct circles that can be constructed from the 4 vertices and the equally spaced 4*n points placed on the sides of a square, using only a compass.at n=4A372977
• Number of integer partitions of n with fewer ones than greatest multiplicity.at n=45A382526