Number of nondecreasing -n..n vectors of length 4 whose dot product with some lexicographically greater or equal nondecreasing -n..n vector equals 4.

A226425

Number of nondecreasing -n..n vectors of length 4 whose dot product with some lexicographically greater or equal nondecreasing -n..n vector equals 4.

Terms

    a(0) =5a(1) =57a(2) =159a(3) =411a(4) =800a(5) =1415a(6) =2394a(7) =3848a(8) =5764a(9) =8484a(10) =12067a(11) =16546a(12) =22403a(13) =29687a(14) =38104a(15) =48908a(16) =61775a(17) =76410a(18) =94297a(19) =115030a(20) =137929a(21) =165596a(22) =197096a(23) =231351a(24) =271259a(25) =316553a(26) =365077a(27) =421509a(28) =484107a(29) =549942

External references