A305234 Number of successors of n having the same value of A001221 as n.

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

Offset: 1

Author

Felix Fröhlich, May 28 2018

Keywords

• nonn

Examples

			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.
		

Crossrefs

Cf. A001221, A077655, A305235.

Programs

PARI

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