289758

Appears in sequences

• Numbers m such that N=(am+1)(bm+1)(cm+1) is a 3-Carmichael number (A087788), where a,b,c = 1,2,19.at n=26A064246
• Number of distinct sets of the form J(P_s)\J(P_t) where s > t are two permutations of size n differing by a transposition and J(M) is the set of join-irreducible elements below M in the lattice of alternating sign matrices.at n=8A391692