id:A091318 - OEIS Search Results

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Lengths of runs of 1's in A039702.

+0
4

1, 2, 1, 2, 1, 1, 1, 3, 2, 1, 1, 1, 1, 1, 2, 2, 1, 1, 1, 2, 1, 2, 1, 2, 1, 4, 1, 1, 3, 2, 1, 1, 1, 1, 1, 1, 2, 1, 1, 3, 2, 1, 4, 2, 1, 1, 2, 2, 3, 1, 1, 3, 1, 1, 1, 1, 1, 2, 2, 1, 1, 1, 4, 1, 2, 1, 1, 2, 1, 1, 2, 1, 2, 1, 1, 2, 2, 2, 2, 1, 2, 3, 2, 2, 1, 1, 2, 1, 2, 2, 1, 2, 1, 2, 1, 1, 1, 2, 1, 2, 2, 2, 3, 3, 3 (list; graph; listen)

	OFFSET	`1,2`
	COMMENT	`Number of primes congruent to 1 mod 4 in sequence before interruption by a prime 3 mod 4.`
	REFERENCES	`Enoch Haga, Exploring prime numbers on your PC and the Internet with directions to prime number sites on the Internet, 2001, pages 30-31. ISBN 1-885794-17-7.`
	FORMULA	`Count primes congruent to 1 mod 4 in sequence before interruption by a prime divided by 4 with remainder 3.`
	EXAMPLE	`a(8)=3 because this is the sequence of primes congruent to 1 mod 4: 89, 97, 101. The next prime is 103, a prime 3 mod 4.`
	CROSSREFS	`Cf. A002144, A002145, A039702, A091267, A091237.` `Sequence in context: A061342 A104639 A128115 this_sequence A003639 A061916 A076348` `Adjacent sequences: A091315 A091316 A091317 this_sequence A091319 A091320 A091321`
	KEYWORD	`easy,nonn`
	AUTHOR	`Enoch Haga (Enokh(AT)comcast.net), Feb 22 2004`

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Last modified September 6 16:04 EDT 2008. Contains 143483 sequences.

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