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A054555 Prime number spiral (clockwise, East spoke).

%I A054555 #21 Feb 19 2022 13:06:02
%S A054555 2,7,47,139,283,503,797,1151,1579,2089,2689,3361,4099,4967,5861,6883,
%T A054555 8011,9199,10457,11903,13313,14887,16547,18269,20161,22091,24083,
%U A054555 26297,28573,30941,33347,35899,38593,41299,44111,47149,50131,53327,56597
%N A054555 Prime number spiral (clockwise, East spoke).
%C A054555 8-spoke wheel overlays prime number spiral; hub is 2 in shell 0; 8 spokes radiate from this hub; this is East, clockwise.
%H A054555 Ivan Panchenko, <a href="/A054555/b054555.txt">Table of n, a(n) for n = 0..1000</a>
%F A054555 a(n) = A000040(A054556(n+1)). - _R. J. Mathar_, Aug 29 2018
%e A054555 Begin a prime number spiral at shell 0 (prime 2), proceed clockwise, East.
%e A054555 From _Omar E. Pol_, Feb 19 2022: (Start)
%e A054555 The spiral with four terms in every spoke looks like this:
%e A054555 .
%e A054555   227  101--103--107--109--113--127
%e A054555    |     |                       |
%e A054555   223   97   29---31---37---41  131
%e A054555    |     |    |              |   |
%e A054555   211   89   23    3----5   43  137
%e A054555    |     |    |    |    |    |   |
%e A054555   199   83   19    2    7   47  139
%e A054555    |     |    |         |    |   |
%e A054555   197   79   17---13---11   53  149
%e A054555    |     |                   |   |
%e A054555   193   73---71---67---61---59  151
%e A054555    |                             |
%e A054555   191--181--179--173--167--163--157
%e A054555 .
%e A054555 (End)
%t A054555 Table[ Prime[4n^2 - 9n + 6], {n, 1, 40} ]
%Y A054555 Cf. A054556, A054551, A054553, A054564, A054566, A054568, A054570, A053999.
%K A054555 easy,nonn
%O A054555 0,1
%A A054555 _Enoch Haga_, and _G. L. Honaker, Jr._, Apr 10 2000
%E A054555 Edited by _Robert G. Wilson v_, Feb 25 2002