[seqfan] Hide my prime (in a composite)

[Eric Angelini]

Hello SeqFans, 
hide the successive primes in a succession
of composite numbers. Always extend
the sequence with the smallest available
integer not yet present.

C = 12,30,15,27,110,130,117,119,123,129,231,237,141,143,147,153,159,161,267,171, ...

Best,
É.