Number of arrays of 8 nondecreasing integers in -n..n with sum zero and equal numbers greater than zero and less than zero.

A203294

Number of arrays of 8 nondecreasing integers in -n..n with sum zero and equal numbers greater than zero and less than zero.

Terms

    a(0) =5a(1) =15a(2) =57a(3) =188a(4) =544a(5) =1380a(6) =3172a(7) =6687a(8) =13163a(9) =24435a(10) =43195a(11) =73194a(12) =119616a(13) =189346a(14) =291486a(15) =437723a(16) =642977a(17) =925889a(18) =1309647a(19) =1822576a(20) =2499166a(21) =3380806a(22) =4517000a(23) =5966265a(24) =7797585a(25) =10091447a(26) =12941561a(27) =16456084a(28) =20759580a(29) =25994452

External references