30748

Appears in sequences

• Numbers k such that the decimal part of k^(1/6) starts with a 'nine digits' anagram.at n=13A034281
• Numbers n such that 6*p(n)-1 and 6*p(n)+1 are twin primes and 6*p(n+1)-1 and 6*p(n+1)+1 are also twin primes with p(n) = n-th prime.at n=33A126655
• Expansion of 1/((1 +x +x^2)^2 *(1 +x^2 +x^3)^3).at n=41A167177
• Triangle read by rows. T(n, k) = 2 * Eulerian(n, k - 1) - binomial(n - 1, k - 1)* binomial(n, k - 1) / k.at n=31A174159
• Triangle read by rows. T(n, k) = 2 * Eulerian(n, k - 1) - binomial(n - 1, k - 1)* binomial(n, k - 1) / k.at n=32A174159
• Expansion of ( -4+15*x-8*x^2 ) / ( (x-1)*(x^2-4*x+1) ).at n=8A257487
• G.f.: Sum_{n>=0} (n+1) * (x + x^n)^n.at n=61A325997
• Expansion of Product_{k>=1} (1 - x^k * (1 + k*x)).at n=36A336978