Original entry on oeis.org
1, 2, 3, 4, 5, 6, 8, 7, 9, 12, 11, 13, 10, 14, 19, 18, 21, 16, 20, 15, 17, 22, 30, 28, 34, 26, 32, 29, 31, 24, 33, 23, 27, 25, 35, 48, 45, 54, 43, 52, 47, 55, 39, 50, 46, 49, 37, 53, 41, 51, 36, 42, 40, 44, 38, 56, 77, 72, 87, 68, 85, 76, 89, 64, 81, 74, 88
Offset: 1
A358124(42) = 52, so a(52) = 42.
A358120
Partial inventory of positions as an irregular table; rows 1 and 2 contain 1, for n > 2, row n contains the 1-based positions of 1's, followed by the positions of 2's, 3's, etc. in rows n-1 and n-2 flattened.
Original entry on oeis.org
1, 1, 1, 2, 1, 3, 2, 1, 4, 3, 5, 2, 1, 6, 5, 8, 3, 7, 2, 4, 1, 9, 7, 13, 5, 11, 8, 10, 3, 12, 2, 6, 4, 1, 14, 11, 20, 9, 18, 13, 21, 5, 16, 12, 15, 3, 19, 7, 17, 2, 8, 6, 10, 4, 1, 22, 17, 32, 13, 30, 21, 34, 9, 26, 19, 33, 15, 24, 18, 28, 5, 23, 20, 29, 3, 27, 11, 31, 7, 25, 2, 12, 10, 16, 6, 14, 4, 8
Offset: 1
Table begins:
1,
1,
1, 2,
1, 3, 2,
1, 4, 3, 5, 2,
1, 6, 5, 8, 3, 7, 2, 4,
1, 9, 7, 13, 5, 11, 8, 10, 3, 12, 2, 6, 4,
...
For n = 7:
- terms in rows 6 and 5 are: 1, 6, 5, 8, 3, 7, 2, 4, 1, 4, 3, 5, 2,
- positions of 1's are: 1, 9,
- positions of 2's are: 7, 13,
- positions of 3's are: 5, 11,
- positions of 4's are: 8, 10,
- positions of 5's are: 3, 12,
- positions of 6's are: 2,
- positions of 7's are: 6,
- positions of 8's are: 4,
- so row 7 is: 1, 9, 7, 13, 5, 11, 8, 10, 3, 12, 2, 6, 4.
See
A358090 for a similar sequence.
Showing 1-2 of 2 results.
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