A093399 Absolute value of difference between counts of uninterrupted runs of 3 nonprimes in A093187 and A093188.

0, 1, 5, 4, 34, 116, 130, 241, 2187, 3076, 9683, 33067, 133346

Offset: 1

Author

Enoch Haga, Mar 30 2004

Keywords

• more
• nonn
• hard

Examples

			a(3)=5 because in A093187 the count is 10 and in A093188 the count is 5. 10-5=5.
		

Crossrefs

Cf. A093187 A093188 A092642 A092643 A092644.

Formula

Take the absolute value of differences between counts of runs of 3 odd nonprimes congruent to 1 mod 4 and 3 mod 4

a(n) = abs(A093187(n) - A093188(n))

Extensions

a(9)-a(13) from Lucas A. Brown, Sep 19 2024