53891

Properties

Appears in sequences

• n*10^4-1, n*10^4-3, n*10^4-7 and n*10^4-9 are all prime.at n=13A064978
• Primes p such that sum of squares of even-position digits equals the sum of squares of odd-position digits of p.at n=22A076168
• Number of rhombi on an n X n grid (or geoboard).at n=21A189418
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 809", based on the 5-celled von Neumann neighborhood.at n=37A273612
• Number of pairs (lambda,mu) of partitions lambda of n and mu of three with mu <= lambda (by diagram containment).at n=33A303853
• Prime numbers preceded by two consecutive numbers which are products of four distinct primes (or tetraprimes).at n=24A361796
• Numbers k such that (39^k + 2^k)/41 is prime.at n=7A379428
• Prime numbersat n=5490