Number of 12-hour periods after which the (27+n) balls of a ball clock return to their initial state.

A221617

Number of 12-hour periods after which the (27+n) balls of a ball clock return to their initial state.

Terms

    a(0) =25a(1) =27a(2) =84a(3) =380a(4) =138a(5) =24a(6) =180a(7) =140a(8) =330a(9) =627a(10) =1190a(11) =200a(12) =252a(13) =420a(14) =399a(15) =1020a(16) =6160a(17) =74a(18) =148a(19) =360a(20) =47a(21) =5460a(22) =870a(23) =1160a(24) =748a(25) =1508a(26) =680a(27) =147a(28) =1260a(29) =1596

External references