28901

Properties

Appears in sequences

• Primes of the form k^2 + 1.at n=30A002496
• a(0) = 1, a(n) = 19*n^2 + 2 for n>0.at n=39A010009
• Numerators of continued fraction convergents to sqrt(243).at n=7A041454
• Numerators of continued fraction convergents to sqrt(972).at n=7A042880
• Odd powers of primes of the form q = x^2 + 1 (A002496).at n=39A054755
• Numbers whose divisors have the form m^k + 1, k>1.at n=32A054964
• Primes whose digits can be arranged in increasing cyclic order - to form a substring of 123456789012345678901234567890...at n=42A068710
• Primes p such that x^5 = 2 has a solution mod p, but x^(5^2) = 2 has no solution mod p.at n=19A070182
• a(n) = 4*a(n-1) - a(n-2) with a(0) = 4 and a(1) = 11.at n=7A077236
• Combined Diophantine Chebyshev sequences A077236 and A077235.at n=14A077238
• Primes which remain prime after one and after two applications of the rotate-and-add operation of A086002.at n=23A086003
• Primes which remain prime after one and after two and after three applications of the rotate-and-add operation of A086002.at n=7A086004
• Primes p such that all prime factors of p-1 have exponent 2.at n=13A089195
• Numbers k such that the k-th prime is in A057468.at n=23A102808
• Numbers k such that k^2 = 12*n^2 + 13.at n=7A106257
• Primes of the form 4*k^2 + 1.at n=29A121326
• Primes p such that continued fraction of (1 + sqrt(p))/2 has period 3.at n=49A146348
• Primes which are within 1 of a square number.at n=31A163588
• Primes of the form 1+A162143(k).at n=3A164517
• Append three digits, each increasing by one modulo 10 from the last digit of the nonnegative integers. 0 -> 123, 1 -> 1234 2 -> 2345, ... , 9 -> 9012, 10 -> 10123, etc.at n=28A167231