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A037165 Prime(n)*prime(n+1)-prime(n)-prime(n+1). +0
25
1, 7, 23, 59, 119, 191, 287, 395, 615, 839, 1079, 1439, 1679, 1931, 2391, 3015, 3479, 3959, 4619, 5039, 5615, 6395, 7215, 8447, 9599, 10199, 10811, 11447, 12095, 14111, 16379, 17679, 18767, 20423, 22199, 23399, 25271, 26891, 28551, 30615, 32039 (list; graph; listen)
OFFSET

1,2

COMMENT

a(n) is also the Frobenius number of the numerical semigroup generated by prime(n) and prime(n+1) - Victoria A Sapko (vsapko(AT)math.unl.edu), Feb 21 2001

REFERENCES

R. Froberg, C. Gottlieb and R. Haggkvist, "On numerical semigroups", Semigroup Forum, 35 (1987), 63-83 (for definition of Frobenius number).

CROSSREFS

Sequence in context: A151718 A027918 A058195 this_sequence A126284 A140096 A096345

Adjacent sequences: A037162 A037163 A037164 this_sequence A037166 A037167 A037168

KEYWORD

nonn

AUTHOR

Armand Turpel armandt(AT)unforgettable.com

page 1

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.


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