The On-Line Encyclopedia of Integer Sequences (OEIS)

A260435 revision #6

A260435

Permutation mapping from Lucky sieve to Ludic sieve.

1, 2, 3, 4, 9, 6, 5, 8, 7, 10, 15, 12, 11, 14, 13, 16, 21, 18, 19, 20, 17, 22, 27, 24, 23, 26, 31, 28, 33, 30, 25, 32, 29, 34, 39, 36, 37, 38, 35, 40, 45, 42, 41, 44, 55, 46, 51, 48, 43, 50, 47, 52, 57, 54, 73, 56, 59, 58, 63, 60, 49, 62, 53, 64, 69, 66, 61, 68, 67, 70, 75, 72, 71, 74, 77, 76, 81, 78, 83, 80, 65, 82, 87, 84, 101, 86, 89, 88

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OFFSET

1,2

LINKS

Antti Karttunen, Table of n, a(n) for n = 1..10104

FORMULA

Other identities. For all n >= 1:

a(A000959(n+1)) = A003309(n+2). [Maps Lucky numbers to odd Ludic numbers.]

As a composition of related permutations:

a(n) = A255407(A255554(n)).

PROG

(Scheme) (define (A260435 n) (if (<= n 1) n (A255127bi (A260438 n) (A260439 n)))) ;; Code for A255127bi given in A255127.