Smallest positive integer with shortest addition-subtraction chain of length n.
A383142
Smallest positive integer with shortest addition-subtraction chain of length n.
Terms
- a(0) =1a(1) =2a(2) =3a(3) =5a(4) =7a(5) =11a(6) =19a(7) =29a(8) =53a(9) =87a(10) =151a(11) =267a(12) =461a(13) =811a(14) =1383a(15) =2357a(16) =4277a(17) =7499a(18) =14003a(19) =25931a(20) =44269a(21) =87773a(22) =152947a(23) =271563
External references
- oeis: A383142