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A277332
a(n) = A253565(A003714(n)).
4
1, 2, 3, 5, 9, 7, 25, 15, 11, 49, 35, 21, 75, 13, 121, 77, 55, 245, 33, 147, 105, 17, 169, 143, 91, 847, 65, 605, 385, 39, 363, 231, 165, 735, 19, 289, 221, 187, 1859, 119, 1183, 1001, 85, 845, 715, 455, 4235, 51, 507, 429, 273, 2541, 195, 1815, 1155, 23, 361, 323, 247, 3757, 209, 3179, 2431, 133, 2023, 1547, 1309, 13013, 95
OFFSET
0,2
COMMENTS
After the initial terms 1, 2 and 3, all other terms can be inductively generated by applying any finite composition-combination of A253560 and A253550 to 3, but with such a restriction that A253560 may not be applied twice in succession.
A permutation of A277334.
Note how A253565(A022340(n)) = A253565(2*A003714(n)) yields a permutation of A056911, odd squarefree numbers.
LINKS
FORMULA
a(n) = A253565(A003714(n)).
EXAMPLE
55 = A253550(A253550(A253560(A253550(3)))), 55 is in this sequence.
PROG
(Scheme) (define (A277332 n) (A253565 (A003714 n)))
CROSSREFS
Cf. A277334 (same sequence sorted into ascending order).
Cf. also A056911, A277006, A277331.
Sequence in context: A323390 A346096 A324886 * A342456 A100674 A058314
KEYWORD
nonn
AUTHOR
Antti Karttunen, Oct 12 2016
STATUS
approved