25373

Properties

Appears in sequences

• Number of partitions of n into parts not of the form 23k, 23k+5 or 23k-5. Also number of partitions with at most 4 parts of size 1 and differences between parts at distance 10 are greater than 1.at n=40A035993
• Discriminants of real quadratic fields with class number 1 and related continued fraction period length of 21.at n=27A051962
• Primes p such that p, p+18, p+36 are consecutive primes.at n=2A052189
• Initial prime in first sequence of n primes congruent to 2 modulo 9.at n=2A057645
• Primes p = p_(n+1) such that p_n + p_(n+2) = 2*p_(n+1) + 12.at n=27A095673
• Primes with at least one of each prime digit.at n=15A108419
• Primes with prime number of only prime digits (i.e., 2, 3, 5, 7).at n=35A124888
• Middle of 3 consecutive prime numbers, p1, p2, p3, such that p1*p2*p3*d1*d2 = average of twin prime pairs; d1 (delta) = p2 - p1, d2 (delta) = p3 - p2.at n=20A153410
• Primes with a prime number of digits and using all of the prime digits 2, 3, 5, 7 at least once and no other digits.at n=7A153770
• Number of planar n X n X n binary triangular grids symmetric under 120 degree rotation with no more than 11 ones in any 5 X 5 X 5 subtriangle.at n=9A153994
• Each entry is the first of three consecutive primes with equal digital sum.at n=1A209396
• Number of n-digit numbers (in base 10) that are divisible by each of their nonzero digits.at n=6A339439
• Expansion of e.g.f. exp(exp(3*x)/3 + exp(2*x)/2 - 5/6).at n=6A355397
• Primes dividing terms of A231830.at n=30A362252
• Primes whose digits are prime in both base 9 and base 10.at n=12A368805
• Prime numbersat n=2799