OFFSET
0,3
COMMENTS
This sequence can be seen as a two-dimensional variant of A125717.
Will every integer appear in the sequence?
LINKS
Rémy Sigrist, Table of n, a(n) for n = 0..10010 (rows for n = 0..140 flattened)
Rémy Sigrist, Colored representation of the first 500 rows
Rémy Sigrist, PARI program
EXAMPLE
Triangle T(n, k) begins:
0
1 2
3 4 6
9 7 10 12
5 11 14 8 16
15 20 19 13 18 21
27 26 25 31 24 30 33
34 40 32 17 38 23 37 47
42 48 56 41 22 39 29 45 55
51 57 65 50 49 58 66 36 28 46
61 67 35 60 59 68 76 86 78 88 96
72 83 79 71 70 81 43 53 64 44 52 63
PROG
(PARI) See Links section.
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Rémy Sigrist, Mar 06 2024
STATUS
approved