Start with 3. If a, b in sequence, so is ab+1.

Terms

a(0) =3a(1) =10a(2) =31a(3) =94a(4) =101a(5) =283a(6) =304a(7) =311a(8) =850a(9) =913a(10) =934a(11) =941a(12) =962a(13) =1011a(14) =2551a(15) =2740a(16) =2803a(17) =2824a(18) =2831a(19) =2887a(20) =2915a(21) =3034a(22) =3041a(23) =3111a(24) =3132a(25) =7654a(26) =8221a(27) =8410a(28) =8473a(29) =8494