来自在线整数百科全书的问候语!http://oeis.org/ Search: id:a110532 Showing 1-1 of 1 %I A110532 %S A110532 0,0,1,1,2,3,4,4,5,5,7,7,8,8,9,10,11,11,12,12,14,14,15,15,16,17,18,18, %T A110532 19,19,21,21,22,22,23,24,25,25,26,26,28,28,29,29,30,31,32,32,33,33,35, %U A110532 35,36,36,37,38,39,39,40,40,42,42,43,43,44,45,46,46,47,47,49,49,50,50 %N A110532 a(n) = floor(n/2) + floor(n/5). %H A110532 G. C. Greubel,n,a(n)n=0…5000的表%H A10532常系数线性递归的索引项签名(0,1,0,0,1,0,- 1).0%F A110532 A(n)=A00 445 26(n)+A00 2266(n).% f f A110532 G.F.:X^ 2 *(1 +x+x^ 2 + 2×x ^ 3 +2×x^ 4)/((1 +x)*(x^ 4 +x^ 3 +x^ sMe+x+1)*(x-1)^)。- 2月20日·2011·F·A10532 A(n)=7N/10+O(1)。- _Charles R Greathouse IV_, Jun 11 2015 %t A110532 Table[Floor[n/2]+Floor[n/5],{n,0,80}] (* or *) LinearRecurrence[ {0,1,0,0,1,0,-1},{0,0,1,1,2,3,4},80] (* _Harvey P. Dale_, Dec 26 2015 *) %o A110532 (PARI) a(n)=n\2 + n\5 \\ _Charles R Greathouse IV_, Jun 11 2015 %Y A110532 Cf. A010761, A110533. %K A110532 nonn,easy %O A110532 0,5 %A A110532 _Reinhard Zumkeller_, Jul 25 2005 # Content is available under The OEIS End-User License Agreement: http://oeis.org/LICENSE