A134197 -id:A134197

Search: a134197 -id:a134197

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page 1

A133261

Union of A134196 and A134197 : A126990 with duplicates removed.

+20
0

3, 7, 13, 19, 23, 31, 37, 43, 47, 53, 61, 67, 73, 83, 89, 97, 103, 109, 113, 131, 139, 151, 157, 167, 173, 181, 193, 199, 211, 223, 229, 233, 241, 251, 257, 263, 271, 277, 283, 293, 307, 313, 317, 337, 349, 353, 359, 367, 373, 383, 389, 401, 409, 421, 433, 443

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

LINKS

Table of n, a(n) for n=1..56.

MATHEMATICA

<< NumberTheory`NumberTheoryFunctions` a = {}; Do[AppendTo[a, PreviousPrime[Sqrt[(Prime[ x - 1])*(Prime[x + 1])]]], {x, 2, 300}]; Union[a]

CROSSREFS

Cf. A134196, A134197, A126990.

KEYWORD

nonn

AUTHOR

Artur Jasinski, Oct 15 2007

STATUS

approved

A134240

Numbers which occur in A105399 but not in A126990.

+10
0

79, 127, 163, 331, 379, 397, 439, 487, 499, 541, 673, 701, 739, 757, 769, 787, 907, 937, 947, 967, 977, 991, 1009, 1103, 1123, 1163, 1187, 1213, 1249, 1367, 1399, 1523, 1549, 1567, 1579, 1597, 1753, 1801