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A112632 Excess of 3k-1 primes over 3k+1 primes, beginning with 2. +0
2
1, 1, 2, 1, 2, 1, 2, 1, 2, 3, 2, 1, 2, 1, 2, 3, 4, 3, 2, 3, 2, 1, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 4, 3, 4, 3, 2, 1, 2, 3, 4, 3, 4, 3, 4, 3, 2, 1, 2, 1, 2, 3, 2, 3, 4, 5, 6, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 3, 4, 3, 4, 5, 4, 3, 2, 3, 4, 3, 4, 3, 4, 3, 4, 3, 2, 3, 4, 3, 4, 3, 4, 5, 4, 5, 4, 5, 6, 7, 6, 5 (list; graph; listen)
OFFSET

1,3

COMMENT

Cumulative sums of A134323. The first negative term is a(23338590792) for the prime 608981813029. - T. D. Noe, Jan 23 2008

LINKS

T. D. Noe, Table of n, a(n) for n=1..10000

EXAMPLE

a[1]=1 because 2 is -1 mod 3

a[2]=1 because 3 is 0 mod 3 and does not change the accounting

a[3]=2 because 5 is -1 mod 3

a[4]=1 because 7 is 1 mod 3

CROSSREFS

Cf. A038698.

Cf. A007352, A098044.

Adjacent sequences: A112629 A112630 A112631 this_sequence A112633 A112634 A112635

Sequence in context: A025824 A103682 A023134 this_sequence A123738 A030738 A114228

KEYWORD

nonn,nice

AUTHOR

Roger Hui (RHui000(AT)Shaw.CA), Dec 22 2005

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Last modified October 11 13:47 EDT 2008. Contains 144830 sequences.


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