Numbers k such that 2*k+1, 3*k+2 and 4*k+3 are primes.

Terms

a(0) =1a(1) =5a(2) =65a(3) =89a(4) =119a(5) =215a(6) =455a(7) =755a(8) =779a(9) =965a(10) =1175a(11) =1349a(12) =1409a(13) =1469a(14) =1679a(15) =1745a(16) =1769a(17) =1889a(18) =1955a(19) =2009a(20) =2105a(21) =2435a(22) =2519a(23) =2525a(24) =2585a(25) =2639a(26) =4685a(27) =5045a(28) =5165a(29) =5735