a(3n) = floor(43*2^n/28) - 1, a(3n+1) = a(3n) + 3*2^(n-3), a(3n+2) = floor(17*2^n/7 - 6/7) for n>=3.

A123946

a(3n) = floor(43*2^n/28) - 1, a(3n+1) = a(3n) + 3*2^(n-3), a(3n+2) = floor(17*2^n/7 - 6/7) for n>=3.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =2a(4) =3a(5) =4a(6) =5a(7) =7a(8) =9a(9) =11a(10) =14a(11) =18a(12) =23a(13) =29a(14) =38a(15) =48a(16) =60a(17) =76a(18) =97a(19) =121a(20) =154a(21) =195a(22) =243a(23) =310a(24) =392a(25) =488a(26) =620a(27) =785a(28) =977a(29) =1242

External references