A100860 Lesser of two consecutive primes of forms 4k+3 and 4k+1 respectively.

3, 11, 23, 31, 47, 59, 71, 83, 107, 131, 139, 151, 167, 179, 191, 227, 239, 251, 263, 271, 283, 311, 331, 347, 367, 383, 419, 431, 443, 503, 523, 547, 563, 571, 587, 599, 607, 631, 647, 659, 691, 727, 751, 787, 811, 827, 839, 863, 919, 947, 971, 991, 1019, 1031

Offset

1,1

Links

Table of n, a(n) for n=1..54.

Mathematica

Prime[Select[Range[200], Mod[Prime[ # ], 4] == 3 && Mod[Prime[ # + 1], 4] == 1 &]]

Crossrefs

Cf. A100877.

Sequence in context: A049491 A000355 A163769 * A018630 A163780 A094379

Adjacent sequences: A100857 A100858 A100859 * A100861 A100862 A100863

Keyword

nonn,easy

Author

Giovanni Teofilatto, Jan 13 2005

Extensions

Edited and corrected by Ray Chandler, Jan 19 2005

Status

approved