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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
5, 7, 11, 13, 17, 29, 31, 43, 47, 59, 61, 73, 89, 97, 101, 103, 107, 127, 131, 139, 151, 157, 173, 181, 193, 197, 229, 233, 239, 251, 263, 271, 283, 307, 311, 331, 337, 349, 353, 373, 389, 397, 401, 409, 421, 431, 439, 443, 463, 467, 479, 487, 491, 499, 503 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..55.

EXAMPLE

Triangle begins:

1: 5

2: 7,11

3: 13,17,29

4: 31,43,47,59

5: 61,73,89,97,101

CROSSREFS

Cf. A108702, A109417-A109420.

Sequence in context: A102386 A346990 A038958 * A132170 A106309 A227576

Adjacent sequences:  A109413 A109414 A109415 * A109417 A109418 A109419

KEYWORD

easy,nonn,tabl

AUTHOR

Ray Chandler, Jun 27 2005

STATUS

approved

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Last modified September 28 22:34 EDT 2021. Contains 347717 sequences. (Running on oeis4.)