Write down the numbers from 3 to infinity. Take next number, M say, that has not been crossed off. Counting through the numbers that have not yet been crossed off after that M, cross off the first, (M+1)st, (2M+1)st, (3M+1)st, etc. Repeat. The numbers that are left form the sequence.
A003311
Write down the numbers from 3 to infinity. Take next number, M say, that has not been crossed off. Counting through the numbers that have not yet been crossed off after that M, cross off the first, (M+1)st, (2M+1)st, (3M+1)st, etc. Repeat. The numbers that are left form the sequence.
Terms
- a(0) =3a(1) =5a(2) =8a(3) =11a(4) =15a(5) =18a(6) =23a(7) =27a(8) =32a(9) =38a(10) =42a(11) =47a(12) =53a(13) =57a(14) =63a(15) =71a(16) =75a(17) =78a(18) =90a(19) =93a(20) =98a(21) =105a(22) =113a(23) =117a(24) =123a(25) =132a(26) =137a(27) =140a(28) =147a(29) =161
External references
- oeis: A003311