Number of nondecreasing arrangements of n numbers in -5..5 with sum zero and sum of squares less than n*30/3.

A183931

Number of nondecreasing arrangements of n numbers in -5..5 with sum zero and sum of squares less than n*30/3.

Terms

    a(0) =1a(1) =4a(2) =12a(3) =36a(4) =89a(5) =211a(6) =457a(7) =938a(8) =1828a(9) =3390a(10) =6009a(11) =10328a(12) =17191a(13) =27843a(14) =43962a(15) =67932a(16) =102768a(17) =152734a(18) =223096a(19) =320963a(20) =455194a(21) =637179a(22) =880985a(23) =1204511a(24) =1629348a(25) =2182512a(26) =2896434a(27) =3810960a(28) =4973139a(29) =6440436

External references