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A299790 Positive integers that do not equal any number minus its number of factorizations. 0
3, 9, 15, 21, 26, 29, 34, 35, 38, 39, 43, 45, 50, 51, 54, 57, 62, 69, 74, 86, 87, 90, 98, 101, 103, 107, 110, 111, 114, 118, 123, 124, 134, 135, 137, 142, 146, 151, 152, 155, 158, 161, 163, 170, 173, 174, 179, 186, 188, 189, 191, 194, 197, 206, 214, 218, 220, 221, 227, 229, 230, 231, 237, 239, 242, 244, 246, 248 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..68.

PROG

(PARI) fcnt(n, m) = {local(s); s=0; if(n == 1, s=1, fordiv(n, d, if(d > 1 & d <= m, s=s+fcnt(n/d, d)))); s};

f(n) = n - fcnt(n, n);

is(n) = j=1; x=2^(floor(log(n)/log(2))+2); while(j<x&&f(j)!=n, j++); f(j)!=n; \\ Jinyuan Wang, Feb 14 2019

CROSSREFS

Cf. A001055 (number of factorizations).

Sequence in context: A324298 A194041 A029506 * A030594 A032676 A228935

Adjacent sequences:  A299787 A299788 A299789 * A299791 A299792 A299793

KEYWORD

nonn

AUTHOR

Aidan Clarke, Jan 21 2019

EXTENSIONS

More terms from Jinyuan Wang, Feb 14 2019

STATUS

approved

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Last modified April 25 00:29 EDT 2019. Contains 322446 sequences. (Running on oeis4.)