Numbers n such that n!!! - 3^10 is prime, where n!3 = n!!! is a triple factorial number (A007661).

Terms

a(0) =19a(1) =20a(2) =22a(3) =26a(4) =41a(5) =55a(6) =56a(7) =152a(8) =155a(9) =316a(10) =347a(11) =383a(12) =500a(13) =556a(14) =646a(15) =656a(16) =748a(17) =976a(18) =1433a(19) =2213a(20) =2680a(21) =2911a(22) =3373a(23) =4799a(24) =4964a(25) =7189a(26) =8798a(27) =9871a(28) =14069a(29) =14627