a(n) = least positive integer > a(n-1) and not a(i)*a(j)-1 for 1 <= i <= j < n, n >= 2, with initial terms 2,4.
A026441
a(n) = least positive integer > a(n-1) and not a(i)*a(j)-1 for 1 <= i <= j < n, n >= 2, with initial terms 2,4.
Terms
- a(0) =2a(1) =4a(2) =5a(3) =6a(4) =8a(5) =10a(6) =12a(7) =13a(8) =14a(9) =16a(10) =17a(11) =18a(12) =20a(13) =21a(14) =22a(15) =26a(16) =28a(17) =30a(18) =32a(19) =34a(20) =36a(21) =37a(22) =38a(23) =40a(24) =42a(25) =44a(26) =45a(27) =46a(28) =48a(29) =50
External references
- oeis: A026441