Numbers k such that one of k, k+1, k+2 is prime and the other two are semiprimes, and one of R(n), R(n+1), R(n+2) is prime and the other two are semiprimes, where R = A004086.
A354285
Numbers k such that one of k, k+1, k+2 is prime and the other two are semiprimes, and one of R(n), R(n+1), R(n+2) is prime and the other two are semiprimes, where R = A004086.
Terms
- a(0) =4a(1) =157a(2) =177a(3) =1381a(4) =1437a(5) =7417a(6) =9661a(7) =9901a(8) =12757a(9) =15297a(10) =15681a(11) =16921a(12) =35961a(13) =36901a(14) =39777a(15) =75741a(16) =77277a(17) =93097a(18) =94441a(19) =103317a(20) =108201a(21) =111261a(22) =117541a(23) =121377a(24) =127597a(25) =128461a(26) =128901a(27) =130197a(28) =134677a(29) =146841
External references
- oeis: A354285