Number of ways to choose a constant rooted partition of each part in a rooted partition of n.

Terms

a(0) =1a(1) =1a(2) =2a(3) =4a(4) =7a(5) =12a(6) =21a(7) =34a(8) =55a(9) =90a(10) =143a(11) =220a(12) =347a(13) =528a(14) =805a(15) =1226a(16) =1831a(17) =2719a(18) =4048a(19) =5940a(20) =8710a(21) =12714a(22) =18403a(23) =26529a(24) =38220a(25) =54679a(26) =77899a(27) =110810a(28) =156848a(29) =221181