OFFSET
1,2
COMMENTS
This sequence is a variant of A366030, 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 <= 881 (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 23 35 67 89 121 167
2 | 2 7 11 15 41 61 83 127 163 199
3 | 5 8 21 37 59 79 113 157 197 247
4 | 9 19 31 14 55 109 151 193 221 307
5 | 17 25 53 73 6 143 133 241 293 353
6 | 29 47 65 107 119 12 239 283 349 401
7 | 43 71 103 149 191 233 10 33 161 463
8 | 49 101 139 181 229 281 27 16 95 451
9 | 97 137 179 227 277 323 341 91 18 115
10 | 131 173 223 253 347 397 461 85 613 24
PROG
(PARI) See Links section.
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Rémy Sigrist, Oct 06 2023
STATUS
approved