Numbers m such that m, m-1, m-2 and m-3 are 1,2,3,4-almost primes respectively.

Terms

a(0) =107a(1) =263a(2) =347a(3) =479a(4) =863a(5) =887a(6) =1019a(7) =2063a(8) =2447a(9) =3023a(10) =3167a(11) =3623a(12) =5387a(13) =5399a(14) =5879a(15) =6599a(16) =6983a(17) =7079a(18) =8423a(19) =8699a(20) =9743a(21) =9887a(22) =10463a(23) =11807a(24) =12263a(25) =12347a(26) =14207a(27) =15383a(28) =15767a(29) =18959