ajs / perl6-Math-Sequences

Useful mathematical sequences
Artistic License 2.0
3 stars 9 forks source link

A000048 / necklaces-two-color-interchangable #112

Closed AlexDaniel closed 5 years ago

AlexDaniel commented 5 years ago

A000048 / Number of n-bead necklaces with beads of 2 colors and primitive period n, when turning over is not allowed but the two colors can be interchanged.

The sequence is not implemented yet.

1 1 1 1 2 3 5 9 16 28 51 93 170 315 585 1091 2048 3855 7280 13797 26214 49929 95325 182361 349520 671088 1290555 2485504 4793490 9256395 17895679 34636833 67108864 130150493 252645135 490853403 954437120 1857283155