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A175677
Binomial(n,4) mod n.
0
0, 0, 0, 1, 0, 3, 0, 6, 0, 0, 0, 3, 0, 7, 0, 12, 0, 0, 0, 5, 0, 11, 0, 18, 0, 0, 0, 7, 0, 15, 0, 24, 0, 0, 0, 9, 0, 19, 0, 30, 0, 0, 0, 11, 0, 23, 0, 36, 0, 0, 0, 13, 0, 27, 0, 42, 0, 0, 0, 15, 0, 31, 0, 48, 0, 0, 0, 17, 0, 35, 0, 54, 0, 0, 0, 19, 0, 39, 0, 60, 0, 0, 0, 21, 0, 43, 0, 66, 0, 0, 0, 23, 0
OFFSET
1,6
COMMENTS
Any patterns?
FORMULA
Apparently a(n)= +2*a(n-8) -a(n-16). [R. J. Mathar, Dec 12 2010]
MATHEMATICA
Table[Mod[Binomial[n, 4], n], {n, 150}]
CROSSREFS
Cf. A000332.
Sequence in context: A344503 A088969 A009780 * A129502 A099892 A060147
KEYWORD
nonn
AUTHOR
Zak Seidov, Aug 07 2010
STATUS
approved