cp's OEIS Frontend

A144310 Triangle read by rows: prime numbers p(n) along left edge (n, 1) and p(n - 1) along right edge (n, n), with (n, k) = rad((n - 1, k - 1) + (n - 1, k)), multiplied by two if four divides (n - 1, k - 1) + (n - 1, k), for 1 < k < n when n > 2.

%I A144310 #2 Mar 31 2012 10:28:53
%S A144310 2,3,2,5,5,3,7,10,4,5,11,17,14,3,7,13,28,31,17,10,11,17,41,59,12,3,21,
%T A144310 13,19,58,20,71,15,12,34,17,23,77,78,91,86,3,46,51,19,29,20,155,13,
%U A144310 177,89,7,97,70,23,31,7,35,84,190,266,12,52,167,93,29
%N A144310 Triangle read by rows: prime numbers p(n) along left edge (n, 1) and p(n - 1) along right edge (n, n), with (n, k) = rad((n - 1, k - 1) + (n - 1, k)), multiplied by two if four divides (n - 1, k - 1) + (n - 1, k), for 1 < k < n when n > 2.
%C A144310 Among the initial terms, 12 occurs most frequently. 3 and 17 are also common.
%e A144310 (7, 2) = 41
%e A144310 (7, 3) = 59
%e A144310 41 + 59 = 100
%e A144310 rad(100) = A007947(100) = 10
%e A144310 Four divides 100, so (8, 3) = 20.
%Y A144310 Cf. A000040, A007947, A144100
%K A144310 easy,nonn,tabl
%O A144310 1,1
%A A144310 _Reikku Kulon_, Sep 17 2008