Numbers k such that !k * k! + 1 = A003422(k) * A000142(k) + 1 = A061640(k) + 1 is prime.
A376644
Numbers k such that !k * k! + 1 = A003422(k) * A000142(k) + 1 = A061640(k) + 1 is prime.
Terms
- a(0) =1a(1) =2a(2) =4a(3) =6a(4) =13a(5) =14a(6) =21a(7) =41a(8) =64a(9) =110a(10) =268a(11) =1196a(12) =3083a(13) =5201a(14) =7496a(15) =9698
External references
- oeis: A376644