a(n) is the first number whose digit sequence can be partitioned into primes in exactly n ways.

Terms

a(0) =2a(1) =23a(2) =223a(3) =373a(4) =2237a(5) =2337a(6) =19373a(7) =22337a(8) =22373a(9) =23773a(10) =31373a(11) =23373a(12) =37337a(13) =223737a(14) =223773a(15) =223373a(16) =233137a(17) =233373a(18) =237337a(19) =1137337a(20) =1937337a(21) =1373373a(22) =2233733a(23) =2233137a(24) =373373a(25) =2233373a(26) =2337313a(27) =2237337a(28) =2237373a(29) =2337353