19392

Appears in sequences

• Coordination sequence for MgZn2, Position Zn1.at n=35A009937
• Number of positive integers <= 2^n of form 5 x^2 + 8 y^2.at n=18A054178
• Riordan array (1/(1-2x), x(1-x)/(1-2x)^2).at n=47A114164
• O.g.f.: exp( Sum_{n>=1} (sigma(2*n)-sigma(n))^3 * x^n/n ).at n=5A193539
• Number of n X 2 0..3 arrays with rows and columns lexicographically nondecreasing read forwards and nonincreasing read backwards.at n=37A201975
• Coefficients of polynomials in a Melham conjecture.at n=14A217475
• Number of partitions of n such that the (sum of all even parts) = floor(n/2).at n=52A284611
• Expansion of Product_{k>=1} ((1 + 2^k*x^k)/(1 - 2^k*x^k))^(1/2^k).at n=14A303438
• E.g.f.: exp(2 * (x + x^2 / 2 + x^3 / 3)).at n=7A324591
• Maximum number of copies of a 1234567 permutation pattern in an alternating (or zig-zag) permutation of length n + 11.at n=8A339358
• Number of ways to write n as an ordered sum of 8 nonzero decimal palindromes.at n=10A341205
• Total number of parts coprime to n in the partitions of n into 6 parts.at n=51A363324
• G.f. satisfies A(x) = 1 / (1 + x*(1 + x*A(x))^4).at n=11A364762
• Expansion of g.f.: x/((1-x^2)^3*(1-2*x)).at n=14A389373
• Numbers k with a prime factor other than 2 or 5 such that digsum(k) = digsum(repeating period of 1/k).at n=28A390294