35963

Properties

Appears in sequences

• a(n) is the index of the smallest triangular number containing exactly n 6's.at n=6A048361
• Primes of the form 666*k - 1.at n=17A063472
• Numbers k such that the k-th triangular number contains only digits {4,6,8}.at n=7A119213
• a(1) = 1, a(n) = the smallest prime divisor of A138793(n).at n=15A138962
• a(n) = 81*n^2 - 2247*n + 15383.at n=35A182255
• Ninth prime p such that (p+n)^2+n is prime but (p+j)^2+j is not prime for all 0<j<n.at n=23A238681
• Primes p such that p minus its digit sum is a perfect cube.at n=21A245064
• Smallest positive integer m such that (m^(2^n) + 1)/2 is prime.at n=19A275530
• a(n)=x is the least prime with pi(x,4,3) - pi(x,4,1) = n-1 where pi(x,4,k) is the number of primes 4*j + k <= x.at n=32A349518
• Primes p such that the polynomial x^7 - 7*x + 3 (mod p) is the product of seven linear factors.at n=21A358147
• Prime numbersat n=3819