18787

Properties

Appears in sequences

• Number of n-level ladder expressions with A001622.at n=13A003006
• Primes p from A031924 such that A052180(primepi(p)) = 19.at n=16A052235
• Initial term in sequence of four consecutive primes whose consecutive differences have d-pattern = [6, 4, 6]; short d-string notation for pattern = [646].at n=25A078856
• Primes in which the digit string can be partitioned into three parts such that third (least significant) part is the product of the first two.at n=15A088294
• Primes with digit sum = 31.at n=25A106767
• Least prime p such that (p,q) is a Double Wieferich prime pair for q=A124121(n).at n=5A124122
• Primes of the form 2*3*5*7*k + 97.at n=45A141899
• Primes congruent to 25 mod 59.at n=36A142752
• Primes congruent to 60 mod 61.at n=30A142858
• Row sums of generalized rhombic triangle A164585.at n=11A164586
• Primes expressed as the sum of square of digits of all primes.at n=27A181508
• Primes of the form p^2 + 2q^2 with p and q odd primes.at n=29A201613
• Primes of the form p^2 + 18, where p is prime.at n=17A201688
• Fibonacci sequence beginning 13, 11.at n=16A206607
• a(n) = prime(prime(n^2)).at n=17A217623
• Number of n X 2 arrays of occupancy after each element moves to some horizontal or vertical neighbor, without move-in move-out left turns.at n=6A221673
• T(n,k)=Number of nXk arrays of occupancy after each element moves to some horizontal or vertical neighbor, without move-in move-out left turns.at n=29A221676
• T(n,k)=Number of nXk arrays of occupancy after each element moves to some horizontal or vertical neighbor, without move-in move-out left turns.at n=34A221676
• Primes p such that p = q^2 + 2*r^2 where q and r are also primes.at n=30A260553
• Primes having only {1, 7, 8} as digits.at n=37A260892