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A064577 First differences of A064574. 6
0, 0, 1, 0, 1, 0, 2, 1, 1, 0, 3, 0, 1, 1, 4, 0, 3, 0, 4, 1, 1, 0, 6, 1, 1, 2, 4, 0, 4, 0, 6, 1, 1, 1, 9, 0, 1, 1, 7, 0, 5, 0, 5, 3, 1, 0, 11, 1, 3, 1, 6, 0, 6, 1, 8, 1, 1, 0, 12, 0, 1, 3, 11, 1, 5, 0, 8, 1, 4, 0, 17, 0, 1, 3, 8, 1, 6, 0, 15, 4, 1, 0, 17, 1, 1, 1, 13, 0, 11, 1, 10, 1, 1, 1, 21, 0, 3, 4, 16 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,7

COMMENTS

Apparently a(n)=0 when n+1 is prime. Diverges from A028422(n+1) at n=19.

LINKS

Antti Karttunen, Table of n, a(n) for n = 1..16383

FORMULA

a(n) = A064574(n+1) - A064574(n). - Antti Karttunen, Feb 24 2020

CROSSREFS

Cf. A064572, A064573, A064574, A064575, A064576, A028422.

Sequence in context: A294904 A055212 A028422 * A322435 A113949 A318808

Adjacent sequences:  A064574 A064575 A064576 * A064578 A064579 A064580

KEYWORD

easy,nonn,look

AUTHOR

Marc LeBrun, Sep 20 2001

STATUS

approved

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Last modified September 24 23:13 EDT 2020. Contains 337325 sequences. (Running on oeis4.)