Numbers k such that k!6 - 6 is prime, where k!6 is the sextuple factorial number (A085158).
A289685
Numbers k such that k!6 - 6 is prime, where k!6 is the sextuple factorial number (A085158).
Terms
- a(0) =17a(1) =19a(2) =23a(3) =31a(4) =37a(5) =47a(6) =65a(7) =151a(8) =157a(9) =251a(10) =283a(11) =371a(12) =391a(13) =635a(14) =779a(15) =799a(16) =1517a(17) =1799a(18) =3355a(19) =24619a(20) =40375a(21) =40793a(22) =53135a(23) =79427
External references
- oeis: A289685