OFFSET
1,2
COMMENTS
This sequence is a variant of A284145 (with one less constraint).
All the prime numbers appear in the sequence, in ascending order.
For any prime number p, the first multiple of p in the sequence is p.
Will every positive integer appear in the sequence?
LINKS
Rémy Sigrist, Colored representation of the array for n, k <= 500 (grayish pixels correspond to prime numbers)
Rémy Sigrist, PARI program
EXAMPLE
Array A(n, k) begins:
n\k| 1 2 3 4 5 6 7 8 9 10
---+-------------------------------------------------
1| 1 3 4 13 25 43 49 97 127 163
2| 2 7 11 23 27 67 89 65 157 193
3| 5 8 21 41 61 83 113 151 191 221
4| 9 19 37 10 79 109 149 119 239 281
5| 17 31 59 57 16 121 115 233 203 347
6| 29 53 73 107 91 6 229 277 337 125
7| 47 55 103 139 181 161 12 331 323 463
8| 71 101 85 179 209 271 317 18 403 259
9| 77 137 173 227 269 95 377 461 24 613
10| 131 169 223 187 313 397 457 437 185 32
PROG
(PARI) See Links section.
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Rémy Sigrist, Sep 26 2023
STATUS
approved