A282814 Table read by antidiagonals (n > 0, k > 0): T(n, k) is the length of the loop in Conway's subprime Fibonacci sequence with starting values of n and k.

18, 18, 18, 18, 1, 18, 136, 18, 18, 136, 18, 18, 1, 18, 136, 18, 18, 18, 136, 18, 18, 136, 18, 136, 1, 18, 136, 18, 18, 18, 1, 18, 136, 1, 18, 18, 136, 18, 18, 136, 1, 18, 18, 136, 18, 18, 18, 18, 18, 18, 18, 136, 136, 136, 18, 18, 136, 1, 18, 18, 1, 18, 18

Offset

1,1

Comments

All terms are in A214897, which is conjectured to be finite. - Peter Kagey, Nov 04 2017

Links

Peter Kagey, Table of n, a(n) for n = 1..10000

Example

T(1, 1) = 18 because 18 is the loop length in Conway's subprime Fibonacci sequence when starting with 1, 1 (A214674). (i.e., A214674(n) = A214674(n + 18) for n >= 38 = A282813(1, 1).)
Upper-left corner of table:
   18  18  18 136 136  18  18  18  18  18 ...
   18   1  18  18  18 136  18 136 136  18 ...
   18  18   1 136  18   1  18 136  18  18 ...
  136  18  18   1 136  18 136  18  18 136 ...
   18  18 136  18   1  18  18  18 136   1 ...
   18  18   1 136  18   1  18  18  18  18 ...
  136  18  18  18  18  18   1 136  18  18 ...
   18  18  18  18 136  18  18   1  18  18 ...
  136  18   1  18  18  18 136  18   1 136 ...
   18 136  18 136   1  18 136  18  18   1 ...
  ...

Crossrefs

Cf. A214674, A214897, A282813, A282814.

Sequence in context: A304260 A176064 A278716 * A010857 A369860 A158910

Adjacent sequences: A282811 A282812 A282813 * A282815 A282816 A282817

Keyword

nonn,tabl

Author

Peter Kagey, Feb 21 2017

Status

approved