Primes p such that tau(p-1)+tau(p+1) is larger than for any previous term. (Smallest prime sandwiched between more composite numbers.)
A090481
Primes p such that tau(p-1)+tau(p+1) is larger than for any previous term. (Smallest prime sandwiched between more composite numbers.)
Terms
- a(0) =2a(1) =3a(2) =5a(3) =7a(4) =11a(5) =17a(6) =19a(7) =29a(8) =41a(9) =71a(10) =179a(11) =181a(12) =239a(13) =419a(14) =701a(15) =839a(16) =881a(17) =1259a(18) =1871a(19) =2161a(20) =2521a(21) =4159a(22) =5039a(23) =7561a(24) =10079a(25) =13441a(26) =13859a(27) =20161a(28) =22679a(29) =30241
External references
- oeis: A090481