25031

Properties

Appears in sequences

• Numerator of [x^(2n)] of the Taylor series sech(cosec(x)-cot(x)) = 1 -x^2/8 -x^4/128 +x^6/15360 +19*x^8/294912 +25031*x^10/3715891200+... .at n=5A013528
• List of Ormiston prime pairs.at n=7A072274
• Smallest prime of the set of four consecutive primes whose sum of digits is a set of four distinct primes.at n=38A106817
• Primes of the form p = prime(k+1) such that prime(k) = (prime(k+3)+prime(k-1))/2.at n=22A126239
• Row sums of triangle A129503.at n=38A129504
• Number of partitions of n where odd parts are distinct or repeated once.at n=45A131945
• Primes that start a run of at least seven consecutive primes, where between successive primes exactly one digit changes and the resulting digits may be permuted.at n=26A157717
• a(n) = (3*n*2^n+2^(n+4)+2*(-1)^n)/18.at n=13A172481
• Numbers n such that there are a, b with abs(sigma(a) - sigma(b)) = sigma(n) - n and a U b = n, where U is decimal concatenation.at n=23A239563
• Expansion of phi(-x^4) / (chi(-x^12) * f(-x)^2) in powers of x where phi(), chi(), f() are Ramanujan theta functions.at n=22A279476
• Primes which, when added to their reversals, produce palindromic primes.at n=35A342681
• Lexicographically earliest infinite sequence of distinct primes such that, for n > 0, 2n | (a(n+1) - a(n)) and, for n > 0, b(n+1) > b(n) where b(n) = (a(n+1) - a(n)) / 2n.at n=24A350392
• Prime numbersat n=2764