34632

Appears in sequences

• Numbers n such that phi(n) + 6 | sigma(n).at n=16A015797
• a(n) is the least k such that k*Mersenne_prime(n) - 1 and k*Mersenne_prime(n) + 1 are twin primes.at n=12A098814
• Expansion of (eta(q^13) / eta(q))^2 in powers of q.at n=21A121597
• a(n) is the optimal wire-length for an n X n grid.at n=33A195647
• Number of arrays of n+2 integers in -4..4 with sum zero and the sum of every adjacent pair being odd.at n=5A202072
• T(n,k)=Number of arrays of n+2 integers in -k..k with sum zero and the sum of every adjacent pair being odd.at n=41A202076
• Number of arrays of 8 integers in -n..n with sum zero and the sum of every adjacent pair being odd.at n=3A202079
• Number of (w,x,y) with all terms in {0,...,n} and w != min(|w-x|, |x-y|).at n=32A213499
• A strong divisibility sequence associated with the algebraic integer 2 + 3*sqrt(3).at n=11A235450
• a(n) = n*(n+1)*(11*n +10)/6.at n=26A254407
• G.f. A(x) satisfies: A(x) = A( x^3 + 6*x*A(x)^3 )^(1/3), with A(0)=0, A'(0)=1.at n=7A271934
• Number of odd chordless cycles in the n-triangular (Johnson) graph.at n=7A303505