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URL: https://oeis.org/history?seq=A359331

⇱ The On-Line Encyclopedia of Integer Sequences (OEIS)

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Showing entries 1-10 | older changes
Nonprime numbers k for which k*k' is a palindrome, where k' is the arithmetic derivative of k (A003415).
#18 by N. J. A. Sloane at Fri Feb 17 22:07:43 EST 2023
STATUS
#17 by Michel Marcus at Mon Jan 30 03:44:03 EST 2023
STATUS
#16 by Michel Marcus at Mon Jan 30 03:40:01 EST 2023
CROSSREFS
STATUS
Discussion
Mon Jan 30
03:43
Michel Marcus: Non primes k such that A190116(k) is in A002113
03:44
Michel Marcus: if primes were included then A002385 would be a subsequence
#15 by Alois P. Heinz at Sun Jan 29 17:37:19 EST 2023
STATUS
#14 by Alois P. Heinz at Sun Jan 29 17:30:41 EST 2023
MAPLE
#13 by Alois P. Heinz at Sun Jan 29 17:28:59 EST 2023
CROSSREFS
#12 by Alois P. Heinz at Sun Jan 29 17:28:16 EST 2023
STATUS
#11 by Amiram Eldar at Sun Jan 29 16:59:57 EST 2023
STATUS
Discussion
Sun Jan 29
17:28
Alois P. Heinz: Why is this base sequence interesting ?
#10 by Amiram Eldar at Sun Jan 29 16:59:54 EST 2023
MATHEMATICA
STATUS
#9 by Marius A. Burtea at Sun Jan 29 16:58:11 EST 2023
STATUS