23202

Appears in sequences

• Sequence A014486 shown in base 4.at n=33A085185
• a(n) is a non-palindromic composite located between twin primes whose reverse, which is less than it, is also located between twin primes.at n=16A103741
• Elements of A103741 that do not terminate in a zero digit.at n=4A103764
• Number of 4 X n 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 1 and 1 1 1 vertically.at n=7A207591
• Numbers k such that phi(k-6) = phi(k) = phi(k+6).at n=27A217006
• Determinant of the n X n matrix with (i,j)-entry equal to A008683(i+j-1) for all i,j = 1..n.at n=18A228548
• Trisection of A107926: The least number k such that there are primes p and q with p - q = 6*n+4, p + q = k, and p the least such prime >= k/2.at n=32A234956
• Number of partitions p of n such that (number of parts of p) - min(p) is a part of p.at n=47A238547
• Number of 2Xn 0..3 arrays with no element equal to one plus the sum of elements to its left or one plus the sum of the elements above it or zero plus the sum of the elements diagonally to its northwest or one plus the sum of the elements antidiagonally to its northeast, modulo 4.at n=13A241436
• Number of (non-null) connected induced subgraphs in the n-triangular honeycomb acute knight graph.at n=8A291594
• Number of generalized Young tableaux with constant rows, weakly increasing columns, and entries summing to n.at n=23A323582
• Averages k of twin primes such that the sum (with multiplicity) of prime factors of k-1, k and k+1 is prime.at n=45A340060