OFFSET
1,13
COMMENTS
This sequence is a 2-dimensional variant of A005185.
Is T(n, k) defined for all positive n and k?
LINKS
Rémy Sigrist, Colored representation of T(n, k) for n = 1..1000 and k = 1..1000 (where the hue is function of T(n, k))
Rémy Sigrist, PARI program for A306741
FORMULA
Empirically, T(n, k) = T(k, n).
EXAMPLE
Array T(n, k) begins:
n\k| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
---+-----------------------------------------------------------------------
1| 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
2| 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
3| 1 1 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2
4| 1 1 2 2 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3
5| 1 1 2 3 4 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3
6| 1 1 2 3 3 2 4 4 4 4 4 4 4 4 4 4 4 4 4 4
7| 1 1 2 3 3 4 4 4 5 5 5 5 5 5 5 5 5 5 5 5
8| 1 1 2 3 3 4 4 6 6 5 5 5 5 5 5 5 5 5 5 5
9| 1 1 2 3 3 4 5 6 4 5 6 6 6 6 6 6 6 6 6 6
10| 1 1 2 3 3 4 5 5 5 6 7 6 6 6 6 6 6 6 6 6
11| 1 1 2 3 3 4 5 5 6 7 6 6 6 6 6 6 6 6 6 6
12| 1 1 2 3 3 4 5 5 6 6 6 4 5 8 8 8 8 8 8 8
13| 1 1 2 3 3 4 5 5 6 6 6 5 10 11 7 7 8 8 8 8
14| 1 1 2 3 3 4 5 5 6 6 6 8 11 6 5 8 9 8 8 8
15| 1 1 2 3 3 4 5 5 6 6 6 8 7 5 6 6 11 10 10 10
PROG
(PARI) See Links section.
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Rémy Sigrist, Mar 07 2019
STATUS
approved