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Search: id:A135025
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| A135025 |
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See Comments lines for definition. |
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+0
2
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| 4, 9, 22, 57, 146, 367, 946, 2507, 6634, 17777, 48522, 133107, 369020, 1028405, 2880288
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OFFSET
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1,1
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COMMENT
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Let P(n) be the n-th prime. Construct the following sequence:
B(1) = 2
If n>= 2, then if (B(n-1) - P(n) < 0) then B(n) = B(n) + P(n) else B(n) = B(n) - P(n)
Definition: if n>=1, the term B(n) is stationary if it satisfies the inequality B(n-1) < B(n) < B(n+1). Sequence gives the indices n of the stationary terms.
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EXAMPLE
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B(1) = 2
B(2) = 5
B(3) = 0
B(4) = 7
B(5) = 18
B(4) is the first stationary term of B, so 4 is the first term of the sequence.
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CROSSREFS
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Cf. A135026.
Adjacent sequences: A135022 A135023 A135024 this_sequence A135026 A135027 A135028
Sequence in context: A042833 A048654 A122626 this_sequence A070713 A060250 A138991
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KEYWORD
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nonn,more
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AUTHOR
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Lior Deutsch (liorde(AT)gmail.com), Feb 10 2008
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