a(n) = (d(n)-r(n))/5, where d = A026040 and r is the periodic sequence with fundamental period (4,0,4,3,4).

A026042

a(n) = (d(n)-r(n))/5, where d = A026040 and r is the periodic sequence with fundamental period (4,0,4,3,4).

Terms

    a(0) =4a(1) =8a(2) =12a(3) =19a(4) =28a(5) =40a(6) =56a(7) =74a(8) =97a(9) =124a(10) =156a(11) =194a(12) =236a(13) =285a(14) =340a(15) =402a(16) =472a(17) =548a(18) =633a(19) =726a(20) =828a(21) =940a(22) =1060a(23) =1191a(24) =1332a(25) =1484a(26) =1648a(27) =1822a(28) =2009a(29) =2208

External references