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A091237 Lengths of runs in A039702. 3
1, 1, 1, 2, 2, 2, 1, 1, 2, 2, 1, 1, 1, 2, 1, 2, 3, 2, 2, 2, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 2, 4, 2, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 2, 2, 1, 1, 1, 2, 2, 1, 2, 4, 1, 1, 1, 1, 2, 3, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 1, 2, 1, 1, 3, 2, 2, 2, 1, 3, 4 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

COMMENTS

Lengths of runs, where a run is a succession of primes that are congruent mod 4.

LINKS

T. D. Noe, Table of n, a(n) for n = 1..10000

MATHEMATICA

Most[Length /@ Split[Table[Mod[Prime[n], 4], {n, 200}]]] (* T. D. Noe, Sep 21 2012 *)

CROSSREFS

Cf. A039702, A091318, A091267.

Sequence in context: A062245 A062246 A037811 * A143477 A214774 A320107

Adjacent sequences:  A091234 A091235 A091236 * A091238 A091239 A091240

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane, Feb 22 2004

EXTENSIONS

More terms from David Wasserman, Feb 28 2006

STATUS

approved

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Last modified January 22 18:48 EST 2019. Contains 319365 sequences. (Running on oeis4.)