141440

Appears in sequences

• Numbers that are the least element of a k-cycle (k > 1) of permutation A113821.at n=38A115641
• Numbers k such that A001065(x)*x = k has at least two solutions.at n=2A212327
• Numbers k such that A001065(x)*x = k has at least two solutions, where x is an abundant number.at n=0A212373
• Triangle S(n,k) by rows: coefficients of 4^((n-1)/2)*(x^(1/4)*d/dx)^n when n is odd, and of 4^(n/2)*(x^(3/4)*d/dx)^n when n is even.at n=32A223170
• Triangle S(n,k) by rows: coefficients of 4^(n/2)*(x^(3/4)*d/dx)^n when n=0,2,4,6,...at n=18A223528
• Norm of the complex coefficients in 1/(1 - x + (1-2*I)*x^2).at n=11A249582
• a(n) = Sum_{k=0..floor(n/3)} binomial(n,k) * binomial(n-2*k,k)^2.at n=12A383526
• Expansion of (1/x) * Series_Reversion( x * (1 - x) / (1 + x^2 / (1 - x)^3) ).at n=9A389436