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A108702
Triangle read by rows where n-th row contains the smallest n primes of form 4k+3 if n is odd and of form 4k+1 if n is even such that sequence is always increasing.
5
3, 5, 13, 19, 23, 31, 37, 41, 53, 61, 67, 71, 79, 83, 103, 109, 113, 137, 149, 157, 173, 179, 191, 199, 211, 223, 227, 239, 241, 257, 269, 277, 281, 293, 313, 317, 331, 347, 359, 367, 379, 383, 419, 431, 439, 449, 457, 461, 509, 521, 541, 557, 569, 577, 593
OFFSET
1,1
EXAMPLE
Triangle begins:
1: 3
2: 5,13
3: 19,23,31
4: 37,41,53,61
5: 67,71,79,83,103
CROSSREFS
KEYWORD
easy,nonn,tabl
AUTHOR
Giovanni Teofilatto, Jun 20 2005
EXTENSIONS
Edited and extended by Ray Chandler, Jun 27 2005
STATUS
approved