Primes of the form 6k + 1 preceding the first-occurrence gaps in A330853.

Terms

a(0) =7a(1) =19a(2) =43a(3) =241a(4) =283a(5) =1327a(6) =1489a(7) =1951a(8) =2389a(9) =4363a(10) =7789a(11) =10177a(12) =16759a(13) =22189a(14) =24247a(15) =38461a(16) =40237a(17) =43441a(18) =69499a(19) =75403a(20) =100801a(21) =118927a(22) =171271a(23) =195541a(24) =204163a(25) =250279a(26) =480169a(27) =577639a(28) =590437a(29) =1164607