(d(n)-r(n))/5, where d = A026066 and r is the periodic sequence with fundamental period (0,3,1,0,1).

A026068

(d(n)-r(n))/5, where d = A026066 and r is the periodic sequence with fundamental period (0,3,1,0,1).

Terms

    a(0) =21a(1) =33a(2) =49a(3) =68a(4) =90a(5) =116a(6) =145a(7) =179a(8) =217a(9) =259a(10) =306a(11) =357a(12) =414a(13) =476a(14) =543a(15) =616a(16) =694a(17) =779a(18) =870a(19) =967a(20) =1071a(21) =1181a(22) =1299a(23) =1424a(24) =1556a(25) =1696a(26) =1843a(27) =1999a(28) =2163a(29) =2335

External references