A348135 Irregular triangle T(n, k), n > 0, k = 1..A067399(n), read by rows; the n-th row gives, in ascending order, the distinct integers k such that A067138(k, m) = n for some m.
1, 1, 2, 1, 3, 1, 2, 4, 1, 5, 1, 2, 3, 6, 1, 3, 7, 1, 2, 4, 8, 1, 9, 1, 2, 5, 10, 1, 11, 1, 2, 3, 4, 6, 12, 1, 13, 1, 2, 3, 6, 7, 14, 1, 3, 5, 7, 15, 1, 2, 4, 8, 16, 1, 17, 1, 2, 9, 18, 1, 19, 1, 2, 4, 5, 10, 20, 1, 5, 21, 1, 2, 11, 22, 1, 23, 1, 2, 3, 4, 6, 8, 12, 24
Offset: 1
Examples
The triangle starts:
1: [1]
2: [1, 2]
3: [1, 3]
4: [1, 2, 4]
5: [1, 5]
6: [1, 2, 3, 6]
7: [1, 3, 7]
8: [1, 2, 4, 8]
9: [1, 9]
10: [1, 2, 5, 10]
11: [1, 11]
12: [1, 2, 3, 4, 6, 12]
13: [1, 13]
14: [1, 2, 3, 6, 7, 14]
15: [1, 3, 5, 7, 15]
16: [1, 2, 4, 8, 16]
Links
- Rémy Sigrist, Table of n, a(n) for n = 1..7412 (first 1024 rows flattened)
- Rémy Sigrist, PARI program for A348135
- Index entries for sequences related to dismal (or lunar) arithmetic
Programs
-
PARI
See Links section.
Formula
T(n, 1) = 1.
T(n, A067399(n)) = n.
Comments