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 1,2.
A026437
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 1,2.
Terms
- a(0) =1a(1) =2a(2) =4a(3) =5a(4) =6a(5) =8a(6) =10a(7) =12a(8) =13a(9) =14a(10) =16a(11) =17a(12) =18a(13) =20a(14) =21a(15) =22a(16) =26a(17) =28a(18) =30a(19) =32a(20) =34a(21) =36a(22) =37a(23) =38a(24) =40a(25) =42a(26) =44a(27) =45a(28) =46a(29) =48
External references
- oeis: A026437