Pattern recognition -4

Find out the next two numbers in the series.
1 ,5 ,14 ,37 ,97 ,_ ,_

Answer

Tn=(Tn-1+Tn+1)/3

5=(1+14)/3

14=(5+37)/3

37=(14+97)/3

Next number  (97*3)-37=254
                      (254*3)-97=665


1,5,14,37,97,254,665,........