A138673 - OEIS

A138673

Prime(n)^4 mod prime(n-1).

1, 1, 1, 4, 5, 9, 16, 9, 8, 16, 25, 34, 16, 41, 27, 24, 16, 15, 55, 16, 55, 19, 51, 2, 62, 16, 50, 16, 38, 109, 2, 117, 16, 131, 16, 88, 40, 93, 127, 85, 16, 45, 16, 63, 16, 40, 58, 33, 16

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OFFSET

0,4

COMMENTS

Related sequences type prime(n)^k mod prime(n-1) (k=1,2,3,4)

prime(n) mod prime(n-1) is given in A001223

prime(n)^2 mod prime(n-1) is given in A038702

prime(n)^3 mod prime(n-1) is given in A138672

prime(n)^4 mod prime(n-1) is given in A138673

prime(n)^5 mod prime(n-1) is given in A138674

prime(n)^6 mod prime(n-1) is given in A138675

prime(n)^7 mod prime(n-1) is given in A138676

prime(n)^8 mod prime(n-1) is given in A138677

prime(n)^9 mod prime(n-1) is given in A138678

prime(n)^10 mod prime(n-1) is given in A138679

prime(n)^11 mod prime(n-1) is given in A138680

prime(n)^12 mod prime(n-1) is given in A138681

LINKS

Table of n, a(n) for n=0..48.

EXAMPLE

a(1)=1 because 3^4 = 81 = 1 mod 2

a(2)=2 because 5^4 = 625 = 1 mod 3

MATHEMATICA

Table[Mod[Prime[n]^4, Prime[n - 1]], {n, 2, 50}]

CROSSREFS

Cf. A001223, A038702, A138672, A138673, A138674, A138675, A138676, A138677, A138678, A138679, A138680, A138681.

Sequence in context: A350695 A049860 A010382 * A087948 A010437 A020682

Adjacent sequences: A138670 A138671 A138672 * A138674 A138675 A138676

KEYWORD

nonn

AUTHOR

Artur Jasinski, Mar 26 2008

STATUS

approved