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A158940 First primes followed by sequences of exactly n monotonic decreasing prime gaps. 2
2, 7, 31, 1637, 1831, 74653, 322171, 5051309, 11938793, 245333213, 245333159, 130272314561, 1273135176799, 23840790158827 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

a(15) > 1.3*10^14. - Giovanni Resta, Apr 19 2016

LINKS

Table of n, a(n) for n=1..14.

EXAMPLE

a(4)=1637 is the first prime to be followed by n=4 monotonic decreasing prime gaps: 20,6,4,2.

a(13)=1273135176799 is the first prime to be followed by n=13 monotonic decreasing prime gaps: 72,60,46,44,42,36,34,24,12,8,6,4,2.

CROSSREFS

Cf. A158939 (monotonic increasing prime gaps)

Sequence in context: A102165 A102160 A215434 * A102161 A271817 A015655

Adjacent sequences:  A158937 A158938 A158939 * A158941 A158942 A158943

KEYWORD

more,nonn

AUTHOR

Alan Worley (aw(AT)xiboo.co.uk), Mar 31 2009

EXTENSIONS

a(14) from Giovanni Resta, Apr 19 2016

STATUS

approved

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Last modified August 5 15:51 EDT 2021. Contains 346477 sequences. (Running on oeis4.)