A305235 Smallest positive number k such that there are exactly n successive equal values of A001221 starting at k, i.e., such that A305234(k) = n.

1, 4, 3, 2, 54, 91, 142, 141, 44360, 48919, 218972, 526097, 526096, 526095, 17233173, 127890362

Offset

0,2

Links

Table of n, a(n) for n=0..15.

Example

For n = 5: A001221(91+k) = 2 for k = 0..5 and 91 is the smallest number x with exactly 5 successors that have the same value of A001221 as x, so a(5) = 91.

Prog

(PARI) a305234(n) = my(k=n+1, i=0); while(omega(k)==omega(n), i++; k++); i
a(n) = my(k=1); while(1, if(a305234(k)==n, return(k)); k++)

Crossrefs

Cf. A001221, A001274, A045983, A048932, A048971, A077657, A305234.

Sequence in context: A174551 A349811 A239799 * A120011 A177924 A200617

Adjacent sequences: A305232 A305233 A305234 * A305236 A305237 A305238

Keyword

nonn,more

Author

Felix Fröhlich, May 28 2018

Status

approved