Largest number reachable starting from 1 and taking n steps either doubling or doubling+reversing.

A371966

Largest number reachable starting from 1 and taking n steps either doubling or doubling+reversing.

Terms

    a(0) =1a(1) =2a(2) =4a(3) =8a(4) =61a(5) =221a(6) =442a(7) =884a(8) =8671a(9) =24371a(10) =60721a(11) =244121a(12) =881371a(13) =2898371a(14) =8692591a(15) =48826601a(16) =97653202a(17) =484336211a(18) =968672422a(19) =6847550561a(20) =24334620331a(21) =68473110671a(22) =247696944631a(23) =884738088671

External references