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A130710 A designed sequence of primes that seems to be chaotic based on the sum of the sequence with a prime and one: a(n+1)->Abs(a(n)+Prime[n]+1). 0
2, 7, 13, 11, 7, 3, 13, 5, 17, 11, 19, 17, 23, 19, 31, 41, 37, 43, 53, 47, 71, 59, 61, 97, 103, 113, 79, 137, 101, 139, 151, 157, 173, 137, 199, 149, 211, 223, 173, 227, 181, 197, 263, 199, 211, 283 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..46.

FORMULA

a(n) =If Prime Abs[a(n-1)+Prime[n-1]+1]

MATHEMATICA

a[0] = 2; a[1] = 7; a[2] = 13; a[n_] := a[n] = Abs[a[n - 1] - Prime[n - 1] + 1] a0 = Flatten[Table[If[PrimeQ[a[n]], a[n], {}], {n, 0, 100}]]

CROSSREFS

Sequence in context: A103886 A231900 A323740 * A145300 A240029 A216525

Adjacent sequences:  A130707 A130708 A130709 * A130711 A130712 A130713

KEYWORD

nonn,uned

AUTHOR

Roger L. Bagula, Jul 01 2007

STATUS

approved

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Last modified January 19 04:17 EST 2020. Contains 331031 sequences. (Running on oeis4.)