32213

Properties

Appears in sequences

• Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 15.at n=22A031603
• Least prime in A031938 (lesser of primes differing by 20) whose distance to the next 20-twin is 6*n.at n=24A052359
• Primes which can be represented as the sum of a prime and its reverse.at n=20A072385
• Numbers k such that k^4 has k as a substring of its decimal expansion.at n=49A075904
• Prime(144*n).at n=23A102350
• Primes of the form (1+2n+3n^2+4n^3)/2.at n=4A123077
• Primes p such that 3*p+4, 5*p+6 and 7*p+8 are also prime.at n=28A173879
• (Partial sums of the squarefree integers) that are prime.at n=17A194128
• Larger of pairs of emirps (A006567) whose difference with the (smaller) reversal is a triangular number (A000217).at n=22A217286
• Lesser of consecutive primes whose sum is a palindromic number.at n=38A242386
• Lesser of consecutive primes whose average is a palindromic number.at n=44A242387
• T(n,k)=Number of nXk 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 1, 3 or 4 neighboring 1s.at n=47A297749
• Number of 3Xn 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 1, 3 or 4 neighboring 1s.at n=7A297751
• Primes p whose last digit is the same as that of both its predecessor prime and its successor prime.at n=32A298075
• Primes whose index is divisible by the product of its digits.at n=35A306766
• a(n) = Sum_{j=1..n} A003718(j-1)*prime(j).at n=38A342604
• Primes in A342604.at n=7A342606
• Lexicographically earliest sequence of distinct prime numbers such that among each pair of consecutive terms, the decimal expansion of the smallest term appears in that of the largest term.at n=11A360534
• The smallest positive number k such that A066686(k,n) is a substring of A051129(n,k), or -1 if no such k exists.at n=3A390224
• Prime numbersat n=3456