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A271419 If n is a ludic number, a(n)=0; if n is not a ludic number, a(n) is the ludic number that rejects n from the ludic number sieve. 4
0, 0, 0, 2, 0, 2, 0, 2, 3, 2, 0, 2, 0, 2, 3, 2, 0, 2, 5, 2, 3, 2, 0, 2, 0, 2, 3, 2, 0, 2, 7, 2, 3, 2, 5, 2, 0, 2, 3, 2, 0, 2, 0, 2, 3, 2, 0, 2, 5, 2, 3, 2, 0, 2, 11, 2, 3, 2, 7, 2, 0, 2, 3, 2, 5, 2, 0, 2, 3, 2, 0, 2, 13, 2, 3, 2, 0, 2, 5, 2, 3, 2, 0, 2, 7 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

LINKS

Max Barrentine, Table of n, a(n) for n = 1..10000

FORMULA

a(n) = (1-A192490(n)) * A272565(n). - Antti Karttunen, Sep 11 2016

PROG

(Scheme) (define (A271419 n) (* (- 1 (A192490 n)) (A272565 n))) ;; Antti Karttunen, Sep 11 2016

CROSSREFS

Cf. A003309, A192607, A192490, A255127, A260738, A271420, A272565.

Cf. A264940 (analogous version for lucky numbers).

Sequence in context: A176866 A294614 A063918 * A278922 A163169 A097974

Adjacent sequences:  A271416 A271417 A271418 * A271420 A271421 A271422

KEYWORD

nonn

AUTHOR

Max Barrentine, Apr 07 2016

STATUS

approved

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Last modified March 1 03:09 EST 2021. Contains 341732 sequences. (Running on oeis4.)