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Search: id:A078400
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A078400 Iterated sum-of-digits of A078403(n). +0
3
2, 3, 5, 7, 2, 5, 2, 5, 7, 2, 5, 7, 7, 2, 7, 2, 5, 5, 2, 5, 7, 5, 2, 2, 7, 2, 5, 7, 5, 2, 7, 2, 5, 5, 7, 2, 7, 5, 7, 2, 7, 5, 2, 5, 5, 7, 7, 2, 7, 2, 2, 5, 5, 7, 5, 2, 2, 5, 7, 5, 7, 2, 5, 2, 7, 2, 7, 7, 7, 5, 5, 5, 2, 2, 7, 2, 5, 7, 2, 2, 5, 2, 5, 2, 7, 5, 2, 5, 7, 5, 7, 7, 7, 2, 5, 2, 7, 2, 2, 5, 7, 2, 5, 7, 7 (list; graph; listen)
OFFSET

1,1

LINKS

Cino Hilliard, Digital Roots

PROGRAM

(PARI) drp(n) = { forprime(x=2, n, r = x%9; if(isprime(r), print1(r" "); ); ); }

CROSSREFS

Cf. A038194, A078403.

Sequence in context: A111309 A007605 A077765 this_sequence A068951 A139752 A004088

Adjacent sequences: A078397 A078398 A078399 this_sequence A078401 A078402 A078403

KEYWORD

easy,nonn,base

AUTHOR

Cino Hilliard (hillcino368(AT)gmail.com), Dec 24 2002

EXTENSIONS

More terms from Joshua Zucker (joshua.zucker(AT)stanfordalumni.org), Jul 24 2006

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Last modified December 21 10:15 EST 2009. Contains 171081 sequences.


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