Number of (w,x,y,z) with all terms in {0,...,n} and w=[R/2], where R=max{w,x,y,z}-min{w,x,y,z} and [ ]=floor.

A212758

Number of (w,x,y,z) with all terms in {0,...,n} and w=[R/2], where R=max{w,x,y,z}-min{w,x,y,z} and [ ]=floor.

Terms

    a(0) =1a(1) =8a(2) =20a(3) =57a(4) =118a(5) =172a(6) =299a(7) =468a(8) =594a(9) =865a(10) =1196a(11) =1424a(12) =1893a(13) =2440a(14) =2800a(15) =3521a(16) =4338a(17) =4860a(18) =5887a(19) =7028a(20) =7742a(21) =9129a(22) =10648a(23) =11584a(24) =13385a(25) =15336a(26) =16524a(27) =18793a(28) =21230a(29) =22700

External references