2679075

Appears in sequences

• Smallest odd n-almost prime m such that m-2 and m+2 are both prime (cousin primes).at n=10A145031
• Odd coreful abundant numbers: the odd terms of A308053.at n=22A339936
• a(n) = Sum_{k=0..floor(n/4)} (k+1) * 2^k * 3^(n-3*k) * binomial(n-2*k,k) * binomial(n-3*k,k).at n=11A391985