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A127018 Least s with s, t both semiprime and s+2n = t. 1
4, 6, 4, 6, 4, 9, 21, 6, 4, 6, 4, 9, 9, 6, 4, 6, 4, 10, 39, 6, 4, 14, 9, 9, 15, 6, 4, 6, 4, 9, 15, 10, 21, 6, 4, 10, 21, 6, 4, 6, 4, 9, 9, 6, 4, 14, 21, 10, 21, 6, 4, 14, 9, 10, 9, 6, 4, 6, 4, 9, 21, 9, 15, 6, 4, 9, 9, 6, 4, 6, 4, 14, 9, 10, 9, 6, 4, 10, 25, 6, 4, 14, 21, 9, 15, 6, 4, 9, 9, 14, 21, 10 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..92.

CROSSREFS

Cf. A127019, A020483.

Sequence in context: A196818 A010711 A168428 * A083396 A142973 A181110

Adjacent sequences:  A127015 A127016 A127017 * A127019 A127020 A127021

KEYWORD

nonn

AUTHOR

Rick L. Shepherd, Jan 02 2007

STATUS

approved

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Last modified October 21 14:13 EDT 2019. Contains 328301 sequences. (Running on oeis4.)