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A054566 Prime number spiral (clockwise, South spoke). 9
2, 13, 67, 173, 347, 577, 877, 1249, 1697, 2243, 2833, 3541, 4289, 5179, 6131, 7159, 8293, 9473, 10799, 12251, 13709, 15289, 16987, 18749, 20681, 22619, 24671, 26839, 29129, 31541, 33911, 36559, 39217, 41981, 44839, 47903, 50989, 54163, 57347 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Ivan Panchenko, Table of n, a(n) for n = 0..1000

FORMULA

8-spoke wheel overlays prime number spiral; hub is 2 in shell 0; 8 spokes radiate from this hub; this is South, clockwise.

EXAMPLE

Begin a prime number spiral at shell 0 (prime 2), proceed clockwise, South.

MATHEMATICA

Table[ Prime[4n^2 - 7n + 4], {n, 1, 40} ]

CROSSREFS

Cf. A054567, A054551, A054553, A054555, A054564, A054568, A054570, A053999.

Sequence in context: A137967 A045764 A106999 * A038144 A097977 A136780

Adjacent sequences:  A054563 A054564 A054565 * A054567 A054568 A054569

KEYWORD

easy,nonn

AUTHOR

Enoch Haga and G. L. Honaker, Jr., Apr 10 2000

EXTENSIONS

Edited by Robert G. Wilson v, Feb 25 2002

STATUS

approved

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Last modified September 15 18:22 EDT 2019. Contains 327082 sequences. (Running on oeis4.)