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A305234 Number of successors of n having the same value of A001221 as n. 1
0, 3, 2, 1, 0, 0, 2, 1, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 2, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 3, 2, 1, 0, 0, 2, 1, 0, 0, 0, 0, 2, 1, 0, 0, 0, 0, 2, 1, 0, 0, 4, 3, 2, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 3, 2, 1, 0, 0, 0, 0, 0, 0, 0, 0, 3, 2, 1 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..87.

EXAMPLE

For n = 2: 3, 4 and 5 have the same number of distinct prime divisors as 2, but 6 does not, so a(2) = 3.

PROG

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

CROSSREFS

Cf. A001221, A077655, A305235.

Sequence in context: A083199 A327187 A274537 * A021761 A221960 A171839

Adjacent sequences:  A305231 A305232 A305233 * A305235 A305236 A305237

KEYWORD

nonn

AUTHOR

Felix Fröhlich, May 28 2018

STATUS

approved

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Last modified October 15 17:58 EDT 2021. Contains 348033 sequences. (Running on oeis4.)