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A361104 a(n) = k such that A361103(k-1) = n, or -1 if n never appears in A361103. 2
1, 2, 3, 17, 9, 4, 8, 31, 15, 7, 5, 47, 64, 6, 21, 10, 96, 20, 11, 13, 57, 38, 14, 16, 79, 37, 18, 12, 160, 28, 22, 19, 61, 24, 26, 23, 131, 52, 27, 25, 41, 33, 46, 29, 77, 45, 42, 34, 54, 59, 36, 32, 68, 72, 44, 40, 104, 82, 50, 49, 75, 111, 51, 35, 98, 143, 63, 30, 85 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Imagine the offset of A361103 is 1, and assume it really is a permutation of the natural numbers. In tabular form, it is
..1..2..3..4..5..6..7..8..9.10.11...
..1..2..3..6.11.14.10..7..5.16..19...
Then the inverse permutation would be
..1..2..3.17..9..4..8.31.15..7..5.47...
which is the present sequence.
LINKS
EXAMPLE
A361103(16) = 4, so a(4) = 17.
CROSSREFS
Sequence in context: A073125 A171240 A078201 * A090913 A176236 A171139
KEYWORD
nonn
AUTHOR
EXTENSIONS
Edited by N. J. A. Sloane, Mar 04 2023
STATUS
approved

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Last modified April 15 20:47 EDT 2024. Contains 371696 sequences. (Running on oeis4.)