177410

Appears in sequences

• "DFJ" (bracelet, size, labeled) transform of 1,3,5,7...at n=9A032212
• "EFJ" (unordered, size, labeled) transform of 1,3,5,7,...at n=9A032300
• a(n) = (-1)^n * [x^n] Sum_{k>=1} x^(k-1)/(1+3*x^k).at n=11A101561
• Numbers k such that there are exactly 9 numbers j for which binomial(k, floor(k/2)) / binomial(k,j) is an integer, i.e., A080383(k) = 9.at n=26A327431