59504

Appears in sequences

• Number of triples of primes in arithmetic progression less than 10^n.at n=3A115608
• Triangle read by rows: T(n,k) is the number of permutations of {1,2,...,n} having k triple descents (n>=0,0<=k<=n-3). We say that i is a triple descent of a permutation p if p(i) > p(i+1) > p(i+2) > p(i+3).at n=25A220183
• Expansion of Product_{k>=1} (1 + 2*x^k)^k.at n=16A261562