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A115394 List of triples of semiprimes: each three numbers are consecutive semiprimes. +0
1
33, 34, 35, 85, 86, 87, 93, 94, 95, 121, 122, 123, 141, 142, 143, 201, 202, 203, 213, 214, 215, 217, 218, 219, 301, 302, 303, 393, 394, 395, 445, 446, 447, 633, 634, 635, 697, 698, 699, 841, 842, 843, 921, 922, 923, 1041, 1042, 1043, 1137, 1138, 1139, 1261 (list; graph; listen)
OFFSET

1,1

FORMULA

a(3n-2)=A056809(n),a(3n-1)=A086005(n),a(3n)=A086005(n)+1=a(3n)=2*A086006(n)+1, n=1,2,...

CROSSREFS

Cf. A056809, A086005, A086006.

Sequence in context: A023475 A067011 A112817 this_sequence A140143 A041543 A144425

Adjacent sequences: A115391 A115392 A115393 this_sequence A115395 A115396 A115397

KEYWORD

nonn

AUTHOR

Zak Seidov (zakseidov(AT)yahoo.com), Mar 08 2006

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Last modified November 18 20:14 EST 2008. Contains 147244 sequences.


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