Number of nondecreasing arrangements of n numbers in -3..3 with sum zero and sum of squares not greater than n*12/3.

A183921

Number of nondecreasing arrangements of n numbers in -3..3 with sum zero and sum of squares not greater than n*12/3.

Terms

    a(0) =1a(1) =3a(2) =5a(3) =12a(4) =22a(5) =39a(6) =63a(7) =104a(8) =155a(9) =226a(10) =324a(11) =452a(12) =612a(13) =827a(14) =1087a(15) =1415a(16) =1817a(17) =2306a(18) =2886a(19) =3593a(20) =4417a(21) =5395a(22) =6537a(23) =7868a(24) =9392a(25) =11172a(26) =13180a(27) =15484a(28) =18100a(29) =21058

External references