Number of path change-ringing sequences of length n for 7 bells.

A324949

Number of path change-ringing sequences of length n for 7 bells.

Terms

    a(0) =1a(1) =20a(2) =380a(3) =7064a(4) =129740a(5) =2368008a(6) =43069168a(7) =781583572a(8) =14160543572a(9) =256233400004

External references