A353829 Inverse permutation to A353828.

0, 1, 2, 3, 4, 7, 6, 5, 8, 9, 10, 11, 12, 13, 22, 21, 20, 19, 18, 17, 14, 15, 16, 25, 24, 23, 26, 27, 28, 29, 30, 31, 34, 33, 32, 35, 36, 37, 38, 39, 40, 67, 66, 65, 64, 63, 62, 59, 60, 61, 58, 57, 56, 55, 54, 53, 50, 51, 52, 43, 42, 41, 44, 45, 46, 47, 48, 49

Offset

0,3

Links

Rémy Sigrist, Table of n, a(n) for n = 0..6561

Index entries for sequences that are permutations of the natural numbers

Example

A353828(7) = 5, so a(5) = 7.

Prog

(PARI) a(n) = {
    my (d=[], t, p=1);
    while (n, d=concat(t=[0, 1, -1][1+n%3], d); n=(n-t)/3);
    for (k=1, #d, if (d[k], p*=d[k]=p*d[k]));
    fromdigits(d, 3);
}

Crossrefs

Cf. A353828.

Sequence in context: A222246 A353828 A321726 * A267299 A077223 A265369

Adjacent sequences: A353826 A353827 A353828 * A353830 A353831 A353832

Keyword

nonn,base

Author

Rémy Sigrist, May 08 2022

Status

approved