25419

Appears in sequences

• a(n) = the smallest multiple of the n-th prime such that (a(n)+1) is divisible by both the (n-1)th prime and the (n+1)st prime.at n=10A143243
• Half the number of n X n X n triangular binary arrays with each element having no more than two neighbors unequal to itself.at n=12A183276
• Indices of primes in the tribonacci-like sequence A214826.at n=11A242315
• Numbers n such that n*2^2281 - 1 is prime.at n=22A265504
• Number of set partitions of [n] into m blocks such that for each pair of distinct cyclically consecutive blocks (b,c) = (b,(b mod m)+1) at least one pair of numbers (i,j) = (i,(i mod n)+1) exists with i member of b and j member of c.at n=10A271272