A093182 Counts where both the odd composites (starting from 1) 1 mod 4 and 3 mod 4 are equal.

5238, 5241, 5242, 5243, 5244, 5245, 5246, 5247, 5248, 5249, 5250, 5255, 129008, 129009, 129010, 129012, 129020, 129021, 129022, 129023, 129024, 129025, 129026, 129027, 129028, 129029, 129030, 129031, 129032, 129033, 129058, 129059, 129060

Offset

1,1

Links

Table of n, a(n) for n=1..33.

Formula

Run separate counts of odd composites 1 mod 4 and 3 mod 4. When the count is equal, record the count.

Example

At 26829 1 mod 4 and 26835 3 mod 4, the count of odd composites is equal for each run at 5238; so a(1)=5238. [Compare to the prime 26833 1 mod 4 where equality occurs at count 1471 and the first reversal in the race occurs at 26861.]

Crossrefs

Cf. A093180, A093181, A007350, A007351, A038691.

Sequence in context: A237408 A235296 A260176 * A124658 A256745 A206165

Adjacent sequences: A093179 A093180 A093181 * A093183 A093184 A093185

Keyword

easy,nonn

Author

Enoch Haga, Mar 27 2004

Status

approved