121346

Appears in sequences

• Hit polynomials; convolution of natural numbers with Fibonacci numbers F(2), F(3), F(4), ....at n=21A001891
• 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=18A327431