[seqfan] Re: A055198 comment seems wrong

Hans Havermann gladhobo at bell.net
Wed Mar 16 00:00:02 CET 2022


"all integers <= 10000 eventually iterate to a cycle based on these 54, although for example 111 takes 2635 iterations to do so via a maximum of 99889"

The maximum for 111 is 99885. I'm inclined to agree with Sean that the 54 are just the tip of the iceberg. Here is 1011:

1011, 5101, 5015, 9105, 9019, 3209, 3123, 7213, 7127, 1317, 1231, 5321, 5235, 9325, 9239, 3429, 3343, 7433, 7347, 1537, 1451, 5541, 5455, 9545, 9459, 3649, 3563, 7653, 7567, 1757, 1671, 5761, 5675, 9765, 9679, 3869, 3783, 7873, 7787, 1977, 1891, 5981, 5895, 9985, 9899, 3099, 3013, 7103, 7017, 1207, 1121, 5211, 5125, 9215, 9129, 3319, 3233, 7323, 7237, 1427, 1341, 5431, 5345, 9435, 9349, 3539, 3453, 7543, 7457, 1647, 1561, 5651, 5565, 9655, 9569, 3759, 3673, 7763, 7677, 1867, 1781, 5871, 5785, 9875, 9789, 3979, 3893, 7983, 7897, 1097, 1011, ...




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