Number of nondecreasing arrangements of n numbers in -3..3 with sum zero and sum of squares less than n*12/3.

A183929

Number of nondecreasing arrangements of n numbers in -3..3 with sum zero and sum of squares less than n*12/3.

Terms

    a(0) =1a(1) =2a(2) =5a(3) =11a(4) =21a(5) =36a(6) =60a(7) =95a(8) =143a(9) =212a(10) =302a(11) =424a(12) =582a(13) =784a(14) =1034a(15) =1355a(16) =1736a(17) =2207a(18) =2776a(19) =3455a(20) =4252a(21) =5213a(22) =6315a(23) =7607a(24) =9105a(25) =10826a(26) =12786a(27) =15053a(28) =17595a(29) =20488

External references