Number of arrays of 6 integers in -n..n with sum zero and equal numbers of elements greater than zero and less than zero.

A201814

Number of arrays of 6 integers in -n..n with sum zero and equal numbers of elements greater than zero and less than zero.

Terms

    a(0) =141a(1) =1001a(2) =4621a(3) =15681a(4) =42821a(5) =99961a(6) =207621a(7) =394241a(8) =697501a(9) =1165641a(10) =1858781a(11) =2850241a(12) =4227861a(13) =6095321a(14) =8573461a(15) =11801601a(16) =15938861a(17) =21165481a(18) =27684141a(19) =35721281a(20) =45528421a(21) =57383481a(22) =71592101a(23) =88488961a(24) =108439101a(25) =131839241

External references