Number of nondecreasing sequences of 4 1..n integers with no element dividing the sequence sum.

Terms

a(0) =0a(1) =0a(2) =1a(3) =5a(4) =15a(5) =29a(6) =59a(7) =103a(8) =168a(9) =259a(10) =386a(11) =553a(12) =772a(13) =1043a(14) =1401a(15) =1832a(16) =2356a(17) =2980a(18) =3729a(19) =4622a(20) =5680a(21) =6872a(22) =8263a(23) =9872a(24) =11716a(25) =13767a(26) =16122a(27) =18765a(28) =21707a(29) =25010