(In reply to
re: Not sure why you would do this... by Ady TZIDON)
The numbers are just the sum of digits of the primes.
1+1=2
1+3=4
1+7=8
1+9=10
2+3=5
2+9=11
My first solution is equivalent but more complicated: each prime minus 9 times its tens digit. Although I made the error of considering 27 prime instead of 29.

Posted by Jer
on 20140925 09:50:59 