

A131842


First differences of A007097.


1



1, 1, 2, 6, 20, 96, 582, 4672, 47330, 595680, 9088942, 164702708, 3483060060, 84705352206, 2339732572312, 72635597193630, 2511496037777828, 95965484116697442, 4024669707807276532, 184149183428282681030, 9143767110701151656280
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OFFSET

0,3


REFERENCES

L. Longeri, Towards understanding nature and the aesthetics of prime numbers, https://www.longeri.org/prime/nature.html [Broken link, but leave the URL here for historical reasons]


LINKS

Table of n, a(n) for n=0..20.


CROSSREFS

Sequence in context: A078564 A079576 A079570 * A020095 A026991 A049379
Adjacent sequences: A131839 A131840 A131841 * A131843 A131844 A131845


KEYWORD

nonn


AUTHOR

Luis Longeri (longeri.nature(AT)gmail.com), Oct 04 2007


EXTENSIONS

a(17) and a(18) found by David Baugh using a program by Xavier Gourdon and Andrey V. Kulsha, Oct 25 2007
a(19) found by Andrey V. Kulsha using a program by Xavier Gourdon, Sep 29 2011
a(20) found by Andrey V. Kulsha using a program by Xavier Gourdon, Oct 02 2011


STATUS

approved



