a(n) = a(n-1) + a(n-2) + 2 a(floor(n/2)) + 3 a(floor(n/3)) + ... + n a(floor(n/n)), where a(0) = 1, a(1) = 2, a(2) = 3.

A298370

a(n) = a(n-1) + a(n-2) + 2 a(floor(n/2)) + 3 a(floor(n/3)) + ... + n a(floor(n/n)), where a(0) = 1, a(1) = 2, a(2) = 3.

Terms

    a(0) =1a(1) =2a(2) =3a(3) =15a(4) =38a(5) =83a(6) =190a(7) =356a(8) =695a(9) =1254a(10) =2267a(11) =3861a(12) =6829a(13) =11417a(14) =19340a(15) =32076a(16) =53545a(17) =87784a(18) =145048a(19) =236589a(20) =387765a(21) =631106a(22) =1028866a(23) =1670013a(24) =2716595a(25) =4404599a(26) =7148426a(27) =11582096a(28) =18776334a(29) =30404300

External references