a(n) = (d(n) - r(n))/5, where d = A026037 and r is the periodic sequence with fundamental period (1,2,0,2,0).

A026039

a(n) = (d(n) - r(n))/5, where d = A026037 and r is the periodic sequence with fundamental period (1,2,0,2,0).

Terms

    a(0) =2a(1) =4a(2) =8a(3) =13a(4) =21a(5) =31a(6) =44a(7) =61a(8) =81a(9) =106a(10) =135a(11) =169a(12) =209a(13) =254a(14) =306a(15) =364a(16) =429a(17) =502a(18) =582a(19) =671a(20) =768a(21) =874a(22) =990a(23) =1115a(24) =1251a(25) =1397a(26) =1554a(27) =1723a(28) =1903a(29) =2096

External references