|
|
A374791
|
|
Irregular triangle T(n, k), n >= 0, k = 1..A120880(n), read by rows; the n-th lists the integers m such that A374560(m) = n.
|
|
0
|
|
|
0, 1, 2, 4, 3, 5, 6, 7, 8, 9, 11, 13, 12, 17, 18, 24, 10, 14, 15, 16, 19, 20, 22, 26, 21, 23, 25, 27, 28, 29, 30, 31, 32, 33, 34, 35, 37, 39, 41, 43, 38, 42, 47, 48, 51, 52, 58, 62, 40, 49, 50, 60, 59, 61, 70, 71, 72, 73, 83, 85, 84, 97, 98, 112, 36, 44, 45, 46, 53, 54
(list;
table;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
0,3
|
|
COMMENTS
|
A374560 corresponds to a square array, but we consider it here as a flat sequence (when its values are read according along its antidiagonals).
As a flat sequence, this is a permutation of the nonnegative integers with inverse A374792.
|
|
LINKS
|
|
|
EXAMPLE
|
Triangle T(n, k) begins:
n n-th row
-- ------------------------------
0 0
1 1, 2
2 4
3 3, 5
4 6, 7, 8, 9
5 11, 13
6 12
7 17, 18
8 24
9 10, 14
10 15, 16, 19, 20
11 22, 26
12 21, 23, 25, 27
13 28, 29, 30, 31, 32, 33, 34, 35
14 37, 39, 41, 43
15 38, 42
|
|
PROG
|
(PARI) \\ See Links section.
|
|
CROSSREFS
|
|
|
KEYWORD
|
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|