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A255646 Odd triprimes modulo 10. 3
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 (list; graph; refs; listen; history; text; internal format)
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 A206643 A257499

Adjacent sequences:  A255643 A255644 A255645 * A255647 A255648 A255649

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller, May 05 2015

STATUS

approved

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Last modified October 22 17:39 EDT 2019. Contains 328319 sequences. (Running on oeis4.)