1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18
35, 34, 33, 32, 31, 30, 29, 28, 27, 26, 25, 24, 23, 22, 21, 20, 19
The 1000th count should land on: 1000 mod (35 - 1) ==14th number counting from 1 at the left.
Here are the last 30 numbers counted by computer !!
(970, 18)
(971, 17)
(972, 16)
(973, 15)
(974, 14)
(975, 13)
(976, 12)
(977, 11)
(978, 10)
(979, 9)
(980, 8)
(981, 7)
(982, 6)
(983, 5)
(984, 4)
(985, 3)
(986, 2)
(987, 1)
(988, 2)
(989, 3)
(990, 4)
(991, 5)
(992, 6)
(993, 7)
(994, 8)
(995, 9)
(996, 10)
(997, 11)
(998, 12)
(999, 13)
(1000, 14)