81030

Appears in sequences

• a(n) = binomial(n+2, 2) + binomial(n+4, 5).at n=23A027658
• Number of permutations of floor(i*9/5), i=0..n-1, with all sums of two and three adjacent terms respectively unique.at n=8A147898
• Least positive integer k such that both k and k*n belong to the set {m>0: m+1, m^2+1 and m^2+prime(m)^2 are all prime}.at n=14A261339
• Least positive integer k such that both k and k*n belong to the set {m>0: m+1, m^2+1 and m^2+prime(m)^2 are all prime}.at n=36A261339