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A120312 Numbers k such that pi(k) == 0 (mod 4), where pi() = A000720, and such that prime(k) == 1 (mod 4). 0
7, 10, 21, 37, 40, 53, 55, 57, 71, 89, 108, 134, 135, 136, 151, 152, 174, 176, 178, 194, 196, 223, 226, 263, 264, 265, 267, 268, 312, 337, 338, 339, 341, 342, 343, 345, 359, 361, 362, 366, 384, 388 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
MATHEMATICA
a = Flatten[Table[If[Mod[PrimePi[n], 4] == 0&& Mod[Prime[n], 4] - 1 == 0, n, {}], {n, 1, 200}]]
CROSSREFS
Cf. A000720. Intersection of A080147 and A120309.
Sequence in context: A363292 A327977 A097634 * A074377 A103119 A054224
KEYWORD
nonn
AUTHOR
Roger L. Bagula, Jun 20 2006
EXTENSIONS
Edited and more terms added by Michel Marcus, Jun 01 2013
Offset corrected by Michel Marcus, Feb 10 2021
STATUS
approved

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Last modified June 19 13:40 EDT 2024. Contains 373503 sequences. (Running on oeis4.)