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A109416 Triangle read by row where n-th row contains the least n primes of form 4k+1 if n is odd and of form 4k+3 if n is even such that sequence is always increasing. 5

%I #4 Mar 30 2012 17:29:48

%S 5,7,11,13,17,29,31,43,47,59,61,73,89,97,101,103,107,127,131,139,151,

%T 157,173,181,193,197,229,233,239,251,263,271,283,307,311,331,337,349,

%U 353,373,389,397,401,409,421,431,439,443,463,467,479,487,491,499,503

%N Triangle read by row where n-th row contains the least n primes of form 4k+1 if n is odd and of form 4k+3 if n is even such that sequence is always increasing.

%e Triangle begins:

%e 1: 5

%e 2: 7,11

%e 3: 13,17,29

%e 4: 31,43,47,59

%e 5: 61,73,89,97,101

%Y Cf. A108702, A109417-A109420.

%K easy,nonn,tabl

%O 1,1

%A _Ray Chandler_, Jun 27 2005

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Last modified April 23 22:36 EDT 2024. Contains 371917 sequences. (Running on oeis4.)