52417

Appears in sequences

• Strong pseudoprimes to base 24.at n=20A020250
• Strong pseudoprimes to base 47.at n=19A020273
• Strong pseudoprimes to base 91.at n=16A020317
• a(n) = 49n^2 - 28n - 20.at n=32A118058
• Expansion of e.g.f. exp( Sum_{n>=1} x^(n^2) / (n^2) ).at n=9A205801
• Sum of squares of cycle lengths for different cycles in Fibonacci-like sequences modulo n.at n=24A233246
• a(n) = Sum_{d|n} (sigma(d)*pod(d)) where sigma(k) = the sum of the divisors of k (A000203) and pod(k) = the product of the divisors of k (A007955).at n=32A325029
• Odd composite integers m such that U(m)^2 == 1 (mod m) and V(m) == 6 (mod m), where U(m) and V(m) are the m-th generalized Lucas and Pell-Lucas numbers of parameters a=6 and b=-1, respectively.at n=35A337629
• a(n) is the smallest number that is the sum of n positive 5th powers in three ways.at n=3A343083
• Numbers that are the sum of eight fifth powers in three or more ways.at n=0A345611
• Numbers that are the sum of eight fifth powers in exactly three ways.at n=0A346328
• Place n points in general position on each side of an equilateral triangle, and join every pair of the 3*n+3 boundary points by a chord; sequence gives number of regions in the resulting planar graph.at n=12A367118