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A374797
Distinct value of A003990 (LCM table read by antidiagonals) in order of appearance.
2
1, 2, 3, 4, 6, 5, 10, 12, 7, 15, 8, 14, 20, 9, 21, 18, 24, 28, 30, 11, 35, 22, 36, 40, 42, 13, 33, 45, 26, 44, 56, 39, 55, 63, 16, 52, 60, 66, 70, 72, 17, 65, 77, 34, 48, 78, 84, 88, 90, 19, 51, 91, 99, 38, 68, 80, 104, 110, 57, 85, 105, 117, 76, 102, 112, 120
OFFSET
1,2
COMMENTS
This sequence is a permutation of the positive integers with inverse A374798 and similar to A257471.
EXAMPLE
The first terms of A003990 are: 1, 2, 2, 3, 2, 3, 4, 6, 6, 4, 5, 4, 3, 4, 5, 6, 10. Removing duplicates yields 1, 2, 3, 4, 6, 5, 10.
PROG
(PARI) \\ See Links section.
CROSSREFS
Cf. A003990, A257471 (analog for multiplication table), A374798 (inverse).
Sequence in context: A209268 A257798 A183079 * A119629 A014631 A263266
KEYWORD
nonn,look
AUTHOR
Rémy Sigrist, Jul 20 2024
STATUS
approved