46073

Properties

Appears in sequences

• Primes p such that 1p1, 3p3, 7p7 and 9p9 are all primes.at n=12A059694
• Row sums of triangle A060924 (odd part of bisection of Lucas triangle).at n=6A060927
• Draw a line through every pair of points with coordinates (x, 1) and (x', 2) with x, x' in 1..n, and then count the number of intersection points above the line y = 2.at n=28A092275
• Largest prime < n!! (double factorial of n).at n=9A178607
• Primes of the form 5n^2 - 7.at n=20A201788
• Number of semiprime Fermat pseudoprimes to base 2 (A214305) less than 10^n.at n=11A300418
• Number of strict integer partitions of 2*n with no subset summing to n.at n=44A321142
• Total sum of the lengths of the first runs in heapable permutations of length n.at n=8A389488
• Prime numbersat n=4767