Number of nondecreasing sequences of 5 1..n integers with no element dividing the sequence sum.

Terms

a(0) =0a(1) =0a(2) =2a(3) =6a(4) =22a(5) =52a(6) =112a(7) =212a(8) =376a(9) =640a(10) =1011a(11) =1560a(12) =2293a(13) =3328a(14) =4711a(15) =6524a(16) =8765a(17) =11703a(18) =15273a(19) =19886a(20) =25459a(21) =32224a(22) =40193a(23) =50022a(24) =61521a(25) =75059a(26) =90825a(27) =109479a(28) =130520a(29) =155415