171310

Appears in sequences

• Integers n >= 1 such that n divides 0!-1!+2!-3!+4!-...+(-1)^{n-1}(n-1)!.at n=40A064383
• Numbers in A064383 that are squarefree.at n=27A064392
• Triangle read by rows: T(n,k) is the number of Schroeder paths of length 2n and having k horizontal segments (a horizontal segment is a maximal string of horizontal steps).at n=44A104549