a(1) = 1; thereafter a(n) is the smallest number > a(n-1) which is neither of the form 2*a(i) nor Sum_{j=1..n-1} ( b_j*a(j) ) where 0 < i < n, b_j = 0 or 1.
A331800
a(1) = 1; thereafter a(n) is the smallest number > a(n-1) which is neither of the form 2*a(i) nor Sum_{j=1..n-1} ( b_j*a(j) ) where 0 < i < n, b_j = 0 or 1.
Terms
- a(0) =1a(1) =3a(2) =5a(3) =7a(4) =17a(5) =19a(6) =50a(7) =64a(8) =152a(9) =190a(10) =470a(11) =598a(12) =1448a(13) =1828a(14) =4472a(15) =5668a(16) =13796a(17) =17452a(18) =42584a(19) =53920a(20) =131408a(21) =166312a(22) =405560a(23) =513400a(24) =1251584a(25) =1584208a(26) =3862592a(27) =4889392a(28) =11920400a(29) =15088816
External references
- oeis: A331800