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#48 by Bruno Berselli at Tue Jul 19 05:47:14 EDT 2022
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#47 by Michel Marcus at Tue Jul 19 02:35:37 EDT 2022
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#46 by Amiram Eldar at Tue Jul 19 02:27:56 EDT 2022
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#45 by Amiram Eldar at Tue Jul 19 02:26:31 EDT 2022
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| LINKS
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<a href="/index/3#3x1">Index entries for sequences related to 3x+1 (or Collatz) problem</a>>.
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#44 by Amiram Eldar at Tue Jul 19 01:52:57 EDT 2022
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#43 by Michael De Vlieger at Sun Jul 10 13:41:15 EDT 2022
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#42 by Peter Luschny at Sun Jul 10 11:38:12 EDT 2022
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#41 by Peter Luschny at Sun Jul 10 11:37:51 EDT 2022
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| PROG
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# This script shows the sequence as an irregular table whose main diagonal is A000975. - _, called the "Lichtenberg sequence" by _Andreas M. Hinz_. - _Peter Luschny_, Jul 10 2022
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#40 by Peter Luschny at Sun Jul 10 11:33:36 EDT 2022
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#39 by Peter Luschny at Sun Jul 10 11:26:58 EDT 2022
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| PROG
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for a in range ((2, , 17):
print()
for b in range(a- - 2, -, -1, -, -2):
print(((1<< << a)-() - (1<< << b))//)) // 3, , end =", ")=", ")
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| STATUS
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proposed
editing
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Discussion
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| Sun Jul 10
| 11:29
| Peter Luschny: Seemingly unnoticed Hallqvist's program gives another interpretation and a connection to A000975.
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