OFFSET
1,5
COMMENTS
A359887(n, k)/A(n, k) can be interpreted as (1/n) AND (1/k) (assuming that inverses of powers of 2 have terminating binary expansions).
LINKS
Rémy Sigrist, PARI program
FORMULA
A(n, k) = A(k, n).
A(n, n) = n.
EXAMPLE
Square array A(n, k) begins:
n\k | 1 2 3 4 5 6 7 8 9 10
----+-----------------------------------------------------
1 | 1 1 1 1 1 1 1 1 1 1
2 | 1 2 1 1 1 1 1 1 1 1
3 | 1 1 3 4 15 1 63 1 63 15
4 | 1 1 4 4 1 1 1 1 1 1
5 | 1 1 15 1 5 15 455 8 585 15
6 | 1 1 1 1 15 6 63 8 63 30
7 | 1 1 63 1 455 63 7 8 63 455
8 | 1 1 1 1 8 8 8 8 1 1
9 | 1 1 63 1 585 63 63 1 9 117
10 | 1 1 15 1 15 30 455 1 117 10
11 | 1 1 1023 1 11275 1023 76461 1 3243933 11275
12 | 1 1 12 1 15 1 63 1 63 15
PROG
(PARI) See Links section.
CROSSREFS
KEYWORD
nonn,base,frac,tabf
AUTHOR
Rémy Sigrist, Jan 17 2023
STATUS
approved