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A078400 Iterated sum-of-digits of A078403(n). 2
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; refs; listen; history; internal format)
OFFSET

1,1

LINKS

Cino Hilliard, Digital Roots

PROG

(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 * A068951 A139752 A004088

Adjacent sequences:  A078397 A078398 A078399 * 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 February 17 17:35 EST 2012. Contains 206061 sequences.