30823

Appears in sequences

• Interprimes (A024675) which are of the form s*prime, s=13.at n=15A075288
• Numbers k such that the digits of sigma(k) are a permutation of those of k, in base 10.at n=32A115920
• Number of monocyclic skeletons with n carbon atoms and a ring size of 7.at n=10A120790
• Smallest number k such that sopf(k)/digsum(k) = prime(n) where sopf(k) is the sum of the distinct primes dividing k and digsum(k) the sum of digits of k.at n=34A241049
• Number of starting positions of Kayles with n pieces such that the 2nd player can win (P-positions).at n=51A263453
• Number of 3Xn 0..1 arrays with every element equal to 0, 1 or 4 horizontally or antidiagonally adjacent elements, with upper left element zero.at n=15A301965