1 is a term because A000040(1) - A163300(1) = 2 (prime);

7 is a term because A000040(7) - A163300(7) = 3 (prime).

MAPLE

A163300 := proc(n) option remember ; if n = 1 then 0; else for a from procname(n-1)+2 by 2 do if not isprime(a) then return a ; end if; end do; end if; end proc:

for n from 1 to 300 do if isprime( ithprime(n) - A163300(n)) then printf("%d, ", n) ; end if; end do: # R. J. Mathar, Apr 20 2010