30067

Appears in sequences

• Boustrophedon transform of primes.at n=8A000747
• Largest squarefree number k such that Q(sqrt(-k)) has class number n.at n=13A038552
• Smallest composite which when sum of prime factors is repeatedly subtracted reaches a prime after n iterations.at n=35A053093
• Greatest number, not divisible by 4, having exactly n partitions into three distinct positive squares.at n=5A096021
• Sums of 4 distinct primorials.at n=17A177709
• Number of n X 3 0..1 arrays avoiding 0 0 0 horizontally and 0 1 0 vertically.at n=5A207177
• T(n,k)=Number of nXk 0..1 arrays avoiding 0 0 0 horizontally and 0 1 0 vertically.at n=33A207182
• Number of 6Xn 0..1 arrays avoiding 0 0 0 horizontally and 0 1 0 vertically.at n=2A207185
• Numbers n which are both happy (A007770) and bihappy (A257795) numbers.at n=34A257950
• Number of achiral color patterns (set partitions) in a row or cycle of length n with 6 or fewer colors (subsets).at n=14A305752
• Numbers obtained by reinterpreting base-2 representation of odd numbers in primorial base.at n=38A328462
• Numbers that are sums of distinct primorial numbers, A002110, and do not have a factor of the form p^p.at n=56A328832
• Largest number k such that C(-k) is the cyclic group of order n, where C(D) is the class group of the quadratic field with discriminant D; or 0 if no such k exists.at n=13A357600