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A331588
a(n) is the least k such that A331587(n) = k * reverse(k) (where reverse(k) is the binary reversal of k, A030101(k)).
3
1, 3, 5, 7, 9, 11, 15, 17, 21, 19, 23, 27, 31, 33, 37, 35, 45, 39, 43, 51, 47, 55, 63, 65, 73, 69, 67, 77, 85, 75, 71, 83, 93, 79, 99, 91, 87, 107, 103, 95, 111, 119, 127, 129, 137, 133, 153, 141, 149, 131, 165, 157, 139, 147, 135, 173, 163, 155, 143, 151, 189
OFFSET
1,2
LINKS
FORMULA
a(n) = A030101(A331589(n)).
a(n) * A331589(n) = A331587(n).
PROG
(PARI) See Links section.
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Rémy Sigrist, Jan 21 2020
STATUS
approved