24674

Appears in sequences

• Numbers k such that binomial(4k, k) - 1 is prime.at n=20A125240
• a(1)=1, a(n) = a(n-1) + n^4 if n odd, a(n) = a(n-1) + n^2 if n is even.at n=11A140159
• Number of Dyck paths of semilength n avoiding the pattern U^4 D^4 U D.at n=24A225691
• Nonnegative integers n such that in balanced ternary representation the number of occurrences of each trit doubles when n is squared.at n=38A257867
• Least positive integer k such that both k and k*n belong to the set {m>0: 2*prime(prime(m))+1 = prime(p) for some prime p}.at n=6A261362
• Numbers k such that (68*10^k + 7)/3 is prime.at n=29A270613
• Number of compositions (ordered partitions) of n into distinct parts, the least being 1.at n=29A339162