n is the sum of k nonzero squares for all 4 <= k <= n-14.

Terms

a(0) =18a(1) =19a(2) =20a(3) =21a(4) =22a(5) =23a(6) =25a(7) =26a(8) =27a(9) =28a(10) =30a(11) =31a(12) =34a(13) =35a(14) =36a(15) =37a(16) =38a(17) =39a(18) =40a(19) =42a(20) =43a(21) =44a(22) =45a(23) =46a(24) =47a(25) =48a(26) =49a(27) =50a(28) =51a(29) =52