42975

Appears in sequences

• The (2^n)-th lucky number.at n=12A181383
• a(n) = (n+1)!! mod n!!.at n=12A227415
• a(n) = (2n+1)!! mod (2n)!! where k!! = A006882(k).at n=5A306184
• Numbers k such that k + A067666(k) is a square.at n=37A386257