Terms k of A104210 for which abs(A003961(k)-(2*k)) is prime, where A003961 is fully multiplicative with a(prime(i)) = prime(i+1), and A104210 gives numbers m for which gcd(m,A003961(m)) > 1.
A379232
Terms k of A104210 for which abs(A003961(k)-(2*k)) is prime, where A003961 is fully multiplicative with a(prime(i)) = prime(i+1), and A104210 gives numbers m for which gcd(m,A003961(m)) > 1.
Terms
- a(0) =6a(1) =15a(2) =35a(3) =77a(4) =646a(5) =1334a(6) =2294a(7) =5681a(8) =6293a(9) =78793a(10) =600677a(11) =2255002a(12) =2482402a(13) =4564166a(14) =8702275a(15) =16798717a(16) =17747807a(17) =22197526a(18) =236981285a(19) =302764377a(20) =1287983157a(21) =2111098886a(22) =2295003595
External references
- oeis: A379232