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A045893 Solutions t to the equation s*prime(n) + t*prime(n+1) = 1. 1
1, -1, -2, 2, -5, -3, -8, 5, 4, -14, -5, -9, -20, 11, 8, 9, -29, -10, 17, -35, -12, 20, 14, -11, -24, -50, 26, -53, -27, -8, 32, 22, -68, 14, -74, -25, -26, 41, 28, 29, -89, -18, -95, -48, -98, -116, -123, 56, -113, -57 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Table of n, a(n) for n=1..50.

MATHEMATICA

Table[ Part[ Part[ ExtendedGCD[ Prime[ i ], Prime[ i+1 ] ], 2 ], 2 ], {i, 50} ]

PROG

(PARI) a(n)=gcdext(prime(n), prime(n+1))[2] \\ Charles R Greathouse IV, Nov 16 2015

CROSSREFS

Cf. A045892.

Sequence in context: A151729 A088652 A266981 * A071939 A075545 A006307

Adjacent sequences:  A045890 A045891 A045892 * A045894 A045895 A045896

KEYWORD

sign

AUTHOR

Ralf W. Grosse-Kunstleve

STATUS

approved

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Last modified December 6 14:47 EST 2019. Contains 329806 sequences. (Running on oeis4.)