Number of irredundant sets in the n-gear graph.

Terms

a(0) =41a(1) =113a(2) =320a(3) =908a(4) =2574a(5) =7317a(6) =20855a(7) =59582a(8) =170681a(9) =490180a(10) =1411207a(11) =4072092a(12) =11774998a(13) =34114389a(14) =99006951a(15) =287783255a(16) =837649471a(17) =2441108294a(18) =7121588680a(19) =20795782761a(20) =60775937523a(21) =177746557324a(22) =520168686310