Floor(1/{(7+n^4)^(1/4)}), where {}=fractional part.

Terms

a(0) =1a(1) =5a(2) =15a(3) =36a(4) =71a(5) =123a(6) =196a(7) =292a(8) =416a(9) =571a(10) =760a(11) =987a(12) =1255a(13) =1568a(14) =1928a(15) =2340a(16) =2807a(17) =3332a(18) =3919a(19) =4571a(20) =5292a(21) =6084a(22) =6952a(23) =7899a(24) =8928a(25) =10043a(26) =11247a(27) =12544a(28) =13936a(29) =15428