a(n) = (d(n)-r(n))/5, where d = A026043 and r is the periodic sequence with fundamental period (0,2,3,0,0).

A026045

a(n) = (d(n)-r(n))/5, where d = A026043 and r is the periodic sequence with fundamental period (0,2,3,0,0).

Terms

    a(0) =9a(1) =13a(2) =19a(3) =28a(4) =39a(5) =53a(6) =70a(7) =91a(8) =117a(9) =147a(10) =182a(11) =222a(12) =268a(13) =321a(14) =380a(15) =446a(16) =519a(17) =600a(18) =690a(19) =788a(20) =895a(21) =1011a(22) =1137a(23) =1274a(24) =1421a(25) =1579a(26) =1748a(27) =1929a(28) =2123a(29) =2329

External references