224676

Appears in sequences

• Squares which are the sum of twin prime pairs.at n=14A037072
• Squares that are the sum of two consecutive primes.at n=32A062703
• Numbers whose sum of non-unitary divisors is a prime and sets a new record for such primes.at n=23A063760
• Least square k^2 > n^2 whose decimal expansion ends in n^2.at n=26A090292
• Perfect powers which are the sum of twin prime pairs.at n=16A119767
• Perfect powers which are the sum of two consecutive primes.at n=38A245360
• Number of length n+3 0..2 arrays with at most two downsteps in every n consecutive neighbor pairs.at n=10A255625
• a(n) = Sum_{j=1..n} Sum_{k=1..n} phi(j)*phi(k).at n=38A372635
• Perfect squares whose pattern of identical digits is unique among the squares.at n=20A374267
• Primitive exponential squarefree exponential abundant numbers: the powerful terms of A383697.at n=34A383698
• Primitive exponential admirable numbers: the powerful terms in A336680.at n=30A391283
• Exponential abundant numbers that are squares of squarefree numbers.at n=24A391428