A065257 Quintal Queens permutation of N: double (mod 5) each digit (0->0, 1->2, 2->4, 3->1, 4->3) of the base-5 representation of n-1, add one.

1, 3, 5, 2, 4, 11, 13, 15, 12, 14, 21, 23, 25, 22, 24, 6, 8, 10, 7, 9, 16, 18, 20, 17, 19, 51, 53, 55, 52, 54, 61, 63, 65, 62, 64, 71, 73, 75, 72, 74, 56, 58, 60, 57, 59, 66, 68, 70, 67, 69, 101, 103, 105, 102, 104, 111, 113, 115, 112, 114, 121, 123, 125, 122, 124, 106

Offset

1,2

Comments

See comment at A065256.

Links

Table of n, a(n) for n=1..66.

Index entries for sequences that are permutations of the natural numbers

Maple

[seq(QuintalQueens1(j), j=1..125)]; QuintalQueens0 := n -> DoubleDigits(n, 5); QuintalQueens1 := n -> 1+QuintalQueens0(n-1);
DoubleDigits := proc(n, b) local i; add((b^i)*((2*floor(n/(b^i))) mod b), i=0..floor(evalf(log[b](n+1)))+1); end;

Crossrefs

Inverse permutation: A065258. A065257[n] = A004515[n-1]+1. Cf. also A065186, A065188.

Sequence in context: A331526 A176881 A065188 * A258428 A090396 A086387

Adjacent sequences: A065254 A065255 A065256 * A065258 A065259 A065260

Keyword

nonn,base

Author

Antti Karttunen, Oct 26 2001

Status

approved