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A359752 Lexicographically earliest array of distinct positive integers read by antidiagonals such that integers in cells which are a knight's move apart are coprime. 1
1, 2, 3, 4, 5, 7, 6, 8, 9, 11, 13, 17, 19, 23, 10, 12, 15, 21, 27, 16, 14, 22, 25, 29, 31, 37, 20, 33, 18, 24, 35, 26, 39, 41, 43, 47, 49, 53, 59, 61, 32, 55, 67, 45, 28, 30, 51, 57, 63, 34, 36, 71, 73, 38, 44, 40, 65, 79, 83, 89, 85, 77, 91, 69, 42, 75 (list; table; graph; refs; listen; history; text; internal format)
OFFSET
1,2
LINKS
Rémy Sigrist, Colored representation of the first 500 antidiagonals (plus-shaped patterns correspond to even values)
Rémy Sigrist, PARI program
EXAMPLE
The array begins:
1 2 4 6 13 12 22 18 ...
3 5 8 17 15 25 24 ...
7 9 19 21 29 35 ...
11 23 27 31 26 ...
10 16 37 39 ...
14 20 41 ...
33 43 ...
47 ...
PROG
(PARI) See Links section.
CROSSREFS
Cf. A097883.
Sequence in context: A370790 A233280 A233279 * A267111 A161919 A269391
KEYWORD
nonn,tabl
AUTHOR
Jodi Spitz, Mar 07 2023
EXTENSIONS
More terms from Rémy Sigrist, Mar 09 2023
More terms from Jodi Spitz, Mar 10 2023
STATUS
approved

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Last modified May 16 10:41 EDT 2024. Contains 372552 sequences. (Running on oeis4.)