id:A141780 - OEIS Search Results

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Numbers n such that A120292(n) is prime.

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	OFFSET	`1,2`
	MATHEMATICA	`Select[Range[200], PrimeQ[Numerator[Abs[(1 - Sum[Prime[k] + 1, {k, 1, #}])/Product[Prime[k] + 1, {k, 1, #}] ]]]&]`
	CROSSREFS	`Cf. A120292 = Absolute value of numerator of determinant of n X n matrix with elements M[i, j] = Prime[i]/(1+Prime[i]) if i=j and 1 otherwise. Cf. A125716 = Numbers n such that A120292(n) = 1. Cf. A141779 = Numbers n such that A120292(n)>1 and is not prime. Cf. A141781 = Terms of A120292(n) that are greater than 1 and are not prime; or A120292( A141779(n) ).` `Sequence in context: A102415 A117003 A057670 this_sequence A110604 A109270 A137877` `Adjacent sequences: A141777 A141778 A141779 this_sequence A141781 A141782 A141783`
	KEYWORD	`nonn`
	AUTHOR	`Alexander Adamchuk (alex(AT)kolmogorov.com), Jul 04 2008`

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Last modified December 2 15:58 EST 2008. Contains 150992 sequences.

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