128159

Properties

Appears in sequences

• a(n)=a(n-1)+a(n-4).at n=36A014098
• a(n) = least m such that if r and s in {F(h)/F(2*h): h = 1,2,...,n} satisfy r < s, then r < k/m < s for some integer k, where F = A000045 (Fibonacci numbers).at n=23A024831
• a(n) = A014217(n+3) - A014217(n).at n=22A153263
• a(n) = a(n-1) + a(n-2) - floor( a(n-1)/2 ).at n=45A173510
• Length of the shorts leg in the unique primitive Pythagorean triple whose inradius is A000032(n) and such that its long leg and its hypotenuse are consecutive natural numbers.at n=23A380821
• Prime numbersat n=11998