Primes in Pi (variant of A336520): a(n) is the smallest prime factor of A090897(n) that does not appear in earlier terms of a, or 1, if no such factor exists.
A336519
Primes in Pi (variant of A336520): a(n) is the smallest prime factor of A090897(n) that does not appear in earlier terms of a, or 1, if no such factor exists.
Terms
- a(0) =3a(1) =2a(2) =53a(3) =7a(4) =58979a(5) =161923a(6) =2643383a(7) =1746893a(8) =6971a(9) =5a(10) =17a(11) =1499a(12) =11a(14) =297707a(15) =13a(16) =37a(17) =126541a(19) =1429a(20) =71971a(21) =383a(22) =61a(23) =1559a(24) =29a(25) =193a(26) =12073a(27) =698543a(28) =157a(29) =20289606809a(30) =23687a(31) =1249
External references
- oeis: A336519