Odd numbers k for which A003961(k)-2k divides A003961(k)-sigma(k), where A003961 shifts the prime factorization one step towards larger primes, and sigma is the sum of divisors function.
A349753
Odd numbers k for which A003961(k)-2k divides A003961(k)-sigma(k), where A003961 shifts the prime factorization one step towards larger primes, and sigma is the sum of divisors function.
Terms
- a(0) =1a(1) =3a(2) =7a(3) =25a(4) =33a(5) =55a(6) =57a(7) =69a(8) =91a(9) =93a(10) =2211a(11) =4825a(12) =12639a(13) =28225a(14) =32043a(15) =68727a(16) =89575a(17) =970225a(18) =2245557a(19) =16322559a(20) =22799825a(21) =48980427a(22) =55037217a(23) =60406599a(24) =68258725a(25) =325422273a(26) =414690595a(27) =569173299a(28) =794579511a(29) =10056372275
External references
- oeis: A349753