Smaller of two consecutive primes p and q, both ending with 3, such that q-p = 10n, or -1 if no such primes exist.

A381372

Smaller of two consecutive primes p and q, both ending with 3, such that q-p = 10n, or -1 if no such primes exist.

Terms

    a(0) =283a(1) =3413a(2) =7253a(3) =19333a(4) =45893a(5) =142993a(6) =399283a(7) =542603a(8) =818723a(9) =396733a(10) =3240983a(11) =10863973a(12) =32788543a(13) =8917523a(14) =17652013a(15) =92593183a(16) =80935103a(17) =92510963a(18) =257789053a(19) =481691513a(20) =20831323a(21) =47326693a(22) =607010093a(23) =1461724573a(24) =387096133a(25) =1496441363a(26) =2298026803a(27) =1855047163

External references