42842

Appears in sequences

• Expansion of Product_{m>=1} (1+x^m)^2.at n=35A022567
• Triangle read by rows: T(n,k) = number of peakless Motzkin paths of length n and having k ascents (0<=k<=floor(n/3)).at n=59A114712
• Smooth Lyndon words with 7 colors.at n=11A215334
• Number of length 3 arrays x(i), i=1..3 with x(i) in i..i+n and no value appearing more than 2 times.at n=33A250352
• Least k > 0 such that gcd(k^n+5, (k+1)^n+5) > 1, or 0 if there is no such k.at n=31A255855
• Numbers k such that 25^k - 5^k - 1 is prime.at n=19A265483
• Indices where A092243 strictly changes sign.at n=36A269737
• a(n) is the smallest positive integer of length (distance from origin) n in the Cayley graph of the integers generated by all powers of 13.at n=25A297182