Number of nondecreasing arrangements of n numbers in -4..4 with sum zero and sum of squares less than n*20/3.
A183930
Number of nondecreasing arrangements of n numbers in -4..4 with sum zero and sum of squares less than n*20/3.
Terms
- a(0) =1a(1) =3a(2) =8a(3) =23a(4) =48a(5) =97a(6) =186a(7) =332a(8) =571a(9) =976a(10) =1541a(11) =2369a(12) =3688a(13) =5394a(14) =7734a(15) =11234a(16) =15565a(17) =21232a(18) =29384a(19) =39037a(20) =51295a(21) =68361a(22) =87995a(23) =112274a(24) =145139a(25) =182141a(26) =226917a(27) =286397a(28) =352005a(29) =430099
External references
- oeis: A183930