a(n) = (d(n)-r(n))/2, where d = A026060 and r is the periodic sequence with fundamental period (1,0,0,0).

A026061

a(n) = (d(n)-r(n))/2, where d = A026060 and r is the periodic sequence with fundamental period (1,0,0,0).

Terms

    a(0) =22a(1) =40a(2) =63a(3) =92a(4) =127a(5) =170a(6) =220a(7) =278a(8) =344a(9) =420a(10) =505a(11) =600a(12) =705a(13) =822a(14) =950a(15) =1090a(16) =1242a(17) =1408a(18) =1587a(19) =1780a(20) =1987a(21) =2210a(22) =2448a(23) =2702a(24) =2972a(25) =3260a(26) =3565a(27) =3888a(28) =4229a(29) =4590

External references