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A180333 Triangle in which row n has n semiprimes such that (p+1)(q+1) is the same for each semiprime pq and (p+1)(q+1) is as small as possible. 2
4, 14, 15, 46, 51, 55, 94, 115, 119, 121, 382, 497, 517, 527, 529, 718, 807, 895, 979, 1003, 1007, 1438, 1795, 1883, 1969, 2033, 2047, 2059, 958, 1077, 1195, 1253, 1343, 1349, 1357, 1363, 5758, 7195, 7909, 8143, 8189, 8257, 8339, 8413, 8453, 13438 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

This sequence was inspired by A180328, but there the semiprime pq is assumed to consist of distinct primes p and q. The value of (p+1)(q+1) for each row is in A180334.

LINKS

T. D. Noe and Zak Seidov, Rows n=1..36 of triangle, flattened

CROSSREFS

Sequence in context: A204541 A020157 A101237 * A030364 A044967 A298126

Adjacent sequences:  A180330 A180331 A180332 * A180334 A180335 A180336

KEYWORD

tabl,nonn

AUTHOR

Zak Seidov and T. D. Noe, Sep 08 2010

STATUS

approved

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Last modified January 18 03:02 EST 2022. Contains 350410 sequences. (Running on oeis4.)