32069

Properties

Appears in sequences

• Primes that remain prime through 4 iterations of function f(x) = 10x + 3.at n=10A023328
• Numbers k such that k^3 is a cube whose digits occur with an equal minimum frequency of 2.at n=24A052051
• Primes p that have exactly three primitive roots that are not primitive roots mod p^2.at n=12A060519
• Numbers k such that sigma(phi(sigma(k))) = phi(sigma(phi(k))).at n=19A067160
• Sums of antidiagonals of number square A110135.at n=8A110136
• Depression-type primes with five digits; from left to right digits decrease to and increase from the central digit.at n=16A157083
• Numerators of the n-th term of the binomial transform of the original Bernoulli numbers.at n=12A164558
• Primes q = 4*p+1, where p == 2 (mod 5) is also prime.at n=52A221981
• Lesser of consecutive primes whose sum is a palindromic number.at n=37A242386
• Lexicographically largest increasing sequence of primes for which the continued square root map (see A257574) produces Pi.at n=24A257582
• Primes p such that the sum of cubes of the 4 consecutive primes starting with p is twice a prime.at n=41A368637
• Triangle read by rows: T(n,k) is the number of achiral combinatorial maps with n edges and genus k, 0 <= k <= floor(n/2).at n=21A380234
• Number of connected induced subgraphs of the 1-skeleton of the n-th Johnson solid, up to symmetries of that solid.at n=18A384377
• a(n) is the number of imprimitive (periodic) 2n-bead balanced binary necklaces.at n=33A386946
• Prime numbersat n=3441