Prime numbers with monotonically decreasing digits, differing by at most 1.

Terms

a(0) =2a(1) =3a(2) =5a(3) =7a(4) =11a(5) =43a(6) =211a(7) =433a(8) =443a(9) =877a(10) =887a(11) =2111a(12) =2221a(13) =3221a(14) =5443a(15) =8887a(16) =9887a(17) =22111a(18) =33211a(19) =43321a(20) =54443a(21) =65543a(22) =76543a(23) =98887a(24) =99877a(25) =322111a(26) =332221a(27) =443221a(28) =444443a(29) =766543