104283

Appears in sequences

• Number of permutations of [n] avoiding {4132, 4123, 1243}.at n=11A294772
• Let P1 >= 5, P2, P3 be consecutive primes, with P2 - P1 = 2. a(n) = (P1 + P2)/12 for the first occurrence of (P3 - P2)/2 = n.at n=30A329252
• 6*a(n) + 1 is the least upper prime p of a pair of twin primes p - 2, p, for which the prime gap immediately following p achieves the size 2*A007494(n).at n=20A337436
• Irregular table read by rows, T(n, k) is the rank of the k-th Genocchi permutation of {1,...,n}, permutations sorted in lexicographical order. If no Genocchi permutation of {1,...,n} exists, then T(n, 1) = 0 by convention.at n=30A347599
• Pairs of integers i,j such that i+prime(i) and j+prime(j) are a pair of amicable numbers.at n=3A349779