Base-2 expansion of a(n) encodes the steps where numbers of the form 6k+5 are encountered when map x -> A252463(x) is iterated down to 1, starting from x=n.
A292945
Base-2 expansion of a(n) encodes the steps where numbers of the form 6k+5 are encountered when map x -> A252463(x) is iterated down to 1, starting from x=n.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =0a(4) =1a(5) =0a(6) =2a(7) =0a(8) =0a(9) =2a(10) =5a(11) =0a(12) =10a(13) =4a(14) =0a(15) =0a(16) =21a(17) =0a(18) =42a(19) =4a(20) =4a(21) =10a(22) =85a(23) =0a(24) =0a(25) =20a(26) =0a(27) =8a(28) =171a(29) =0
External references
- oeis: A292945