A sequence related to M-partitions.

Terms

a(0) =1a(1) =2a(2) =3a(3) =6a(4) =7a(5) =11a(6) =14a(7) =21a(8) =24a(9) =34a(10) =37a(11) =51a(12) =58a(13) =75a(14) =82a(15) =110a(16) =117a(17) =148a(18) =161a(19) =202a(20) =215a(21) =265a(22) =278a(23) =342a(24) =365a(25) =436a(26) =459a(27) =557a(28) =580a(29) =685