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A371257
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Irregular triangle T(n, k), n >= 0, k = 1..2^A005811(n), read by rows; the n-th row lists the numbers m such that A371256(m) = n.
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5
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0, 1, 2, 3, 5, 6, 7, 4, 8, 9, 17, 18, 22, 10, 11, 15, 16, 19, 20, 21, 23, 12, 14, 24, 25, 13, 26, 27, 53, 54, 67, 28, 29, 51, 52, 55, 56, 66, 68, 30, 32, 33, 34, 46, 47, 48, 50, 57, 59, 60, 61, 64, 65, 69, 70, 31, 35, 45, 49, 58, 62, 63, 71, 36, 44, 72, 76
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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0,3
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COMMENTS
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The n-th row has 2^A005811(n) terms.
As a flat sequence, this is a permutation of the nonnegative integers, with inverse A371258.
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LINKS
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EXAMPLE
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Triangle T(n, k) begins:
n n-th row
-- --------------------------------------------------------------
0 0
1 1, 2
2 3, 5, 6, 7
3 4, 8
4 9, 17, 18, 22
5 10, 11, 15, 16, 19, 20, 21, 23
6 12, 14, 24, 25
7 13, 26
8 27, 53, 54, 67
9 28, 29, 51, 52, 55, 56, 66, 68
10 30, 32, 33, 34, 46, 47, 48, 50, 57, 59, 60, 61, 64, 65, 69, 70
11 31, 35, 45, 49, 58, 62, 63, 71
12 36, 44, 72, 76
13 37, 38, 42, 43, 73, 74, 75, 77
14 39, 41, 78, 79
15 40, 80
.
Triangle T(n, k) begins, in ternary, with row indexes in binary:
bin(n) n-th row in ternary
------ ----------------------------------------------
0 0
1 1, 2
10 10, 12, 20, 21
11 11, 22
100 100, 122, 200, 211
101 101, 102, 120, 121, 201, 202, 210, 212
110 110, 112, 220, 221
111 111, 222
1000 1000, 1222, 2000, 2111
1001 1001, 1002, 1220, 1221, 2001, 2002, 2110, 2112
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PROG
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(PARI) \\ See Links section.
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CROSSREFS
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See A371265 for a similar sequence.
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KEYWORD
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nonn,base,tabf
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AUTHOR
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STATUS
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approved
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