65881

Properties

Appears in sequences

• Number of compositions of n into 5 parts such that no two adjacent parts are equal.at n=33A106354
• Numbers k such that the value pi(k), the number of primes <= k, can be obtained deleting some of the repeating adjacent digits of k.at n=29A113898
• Primes p such that pi(p) is obtained by dropping one of the digits of p in decimal expansion.at n=20A114924
• Primes of the form 2*n^2+6*n+1.at n=30A176549
• Primes whose base-3 representation also is the base-2 representation of a prime.at n=50A235265
• Numbers k such that -3 is a quadratic residue (not necessarily coprime) modulo k, k + 1, k + 2 and k + 3.at n=38A318527
• Primes associated with the indices in A362060.at n=20A362066
• Number of integer partitions of n with fewer distinct parts than distinct divisors of parts.at n=45A371132
• Prime numbersat n=6581