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

A226412

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

Terms

    a(0) =5a(1) =67a(2) =192a(3) =479a(4) =963a(5) =1709a(6) =2893a(7) =4633a(8) =6895a(9) =10079a(10) =14273a(11) =19437a(12) =26217a(13) =34565a(14) =44183a(15) =56485a(16) =71133a(17) =87649a(18) =107907a(19) =131199a(20) =156957a(21) =187941a(22) =223227a(23) =261361a(24) =305927a(25) =356437a(26) =410419a(27) =473007a(28) =542575a(29) =615417

External references