A255646 Odd triprimes modulo 10.

7, 5, 3, 5, 9, 5, 7, 5, 7, 3, 5, 1, 5, 5, 7, 1, 5, 5, 1, 3, 5, 9, 5, 5, 3, 3, 5, 7, 3, 9, 5, 7, 9, 3, 5, 9, 5, 5, 5, 5, 7, 3, 7, 1, 9, 9, 5, 1, 5, 5, 3, 5, 9, 5, 7, 7, 9, 5, 1, 7, 3, 5, 5, 1, 5, 5, 1, 7, 9, 5, 7, 5, 1, 5, 3, 5, 7, 1, 7, 3, 5, 7, 3, 9, 5, 5

Offset

1,1

Comments

Final digits of odd triprimes;

a(n) = A046316(n) mod 10.

Links

Reinhard Zumkeller, Table of n, a(n) for n = 1..10000

Index entries for sequences related to final digits of numbers

Prog

(Haskell)
a255646 = flip mod 10 . a046316
(PARI) do(x)=my(v=List(), t); forprime(p=3, x\9, forprime(q=3, min(x\(3*p), p), t=p*q; forprime(r=3, min(x\t, q), listput(v, t*r)))); Set(v)%10 \\

Crossrefs

Cf. A046316, subsequence of A253721.

Sequence in context: A176974 A198983 A019935 * A255196 A345736 A206643

Adjacent sequences: A255643 A255644 A255645 * A255647 A255648 A255649

Keyword

nonn

Author

Reinhard Zumkeller, May 05 2015

Status

approved