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A106129 Numbers n such that n-th semiprime == 4 (mod n). 0
5, 37, 38, 58, 61, 70, 77, 613379, 613413, 613415, 613429, 613485, 613509, 613518, 613521, 613533, 613543, 613599 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..18.

EXAMPLE

a(1)=5 is a term because 5th semiprime (i.e. 14)== 4 (mod 5).

CROSSREFS

Cf. A001358.

Sequence in context: A257343 A244927 A043075 * A096673 A144960 A173826

Adjacent sequences:  A106126 A106127 A106128 * A106130 A106131 A106132

KEYWORD

hard,more,nonn

AUTHOR

Shyam Sunder Gupta, May 07 2005

STATUS

approved

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Last modified June 1 09:53 EDT 2020. Contains 334762 sequences. (Running on oeis4.)