31099

Appears in sequences

• arctanh(arctanh(x)*exp(x))=x+2/2!*x^2+7/3!*x^3+36/4!*x^4+293/5!*x^5...at n=7A012717
• Number of subsets of {1, 2, ..., n} containing n and having <=9 pairwise coprime elements.at n=43A186993
• Number of partitions p = [x(1), ..., x(k)], where x(1) >= x(2) >= ... >= x(k), of n such that min(x(i) - x(i-1)) <= number of distinct parts of p.at n=39A241824
• Expansion of Sum_{k>=1} (-1 + Product_{j>=2} 1 / (1 - x^(k*j))).at n=49A329435
• a(n) is the number of 132-avoiding permutations p so that p^3 is the identity permutation.at n=18A370686
• Total number of fixed points in all heapable permutations of length n.at n=8A388139