A247892 - OEIS

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A247892

Number of nonprimes in n-th row of triangle A077581.

3

1, 1, 2, 1, 3, 1, 4, 3, 4, 3, 7, 3, 8, 5, 8, 6, 11, 4, 12, 7, 11, 9, 15, 6, 15, 12, 16, 12, 20, 4, 21, 15, 19, 16, 22, 10, 26, 18, 23, 17, 29, 11, 30, 22, 24, 24, 33, 16, 34, 22, 31, 25, 38, 19, 36, 27, 35, 30, 43, 15, 44, 33, 36, 34, 44, 22, 49, 36, 43, 27

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OFFSET

1,3

COMMENTS

a(n) = n - A247815(n)

LINKS

Table of n, a(n) for n=1..70.

PROG

(Haskell)

a247892 n = n - a247815 n

CROSSREFS

Cf. A077581, A247815.

Sequence in context: A020952 A332294 A079554 * A366649 A079880 A366291

Adjacent sequences: A247889 A247890 A247891 * A247893 A247894 A247895

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller, Sep 26 2014

STATUS

approved