a(1) = 1; for m >= 2, a(n) = a(n-1) + floor(a(n-1)/(n-1)) + 2.

Terms

a(0) =1a(1) =4a(2) =8a(3) =12a(4) =17a(5) =22a(6) =27a(7) =32a(8) =38a(9) =44a(10) =50a(11) =56a(12) =62a(13) =68a(14) =74a(15) =80a(16) =87a(17) =94a(18) =101a(19) =108a(20) =115a(21) =122a(22) =129a(23) =136a(24) =143a(25) =150a(26) =157a(27) =164a(28) =171a(29) =178