50427

Appears in sequences

• Indices of primes at which the prime race 4k-1 vs. 4k+1 is tied.at n=20A038691
• Values of c such that (c+9*b)*Prime(n)#-1 is the least prime such that (c+k*b)*Prime(n)#-1 is prime for k=0 to 9 with c+9*b < Prime(n)# , or 0 if no solution. Prime(n)#=n-th primorial.at n=25A188366
• Least m such that the Collatz (3x+1) iteration of m has exactly n increasing peak values.at n=22A221470
• Number of subsets of {1..n} containing the sum of every subset whose sum is <= n.at n=25A326080
• a(n) is the number of squares of side length greater than 1 having vertices at the points of an n X n grid of dots.at n=27A328152