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A088470 Lunar sum of distinct lunar prime divisors of n. 2
0, 0, 0, 0, 0, 0, 0, 0, 0, 90, 99, 19, 19, 19, 19, 19, 19, 19, 19, 90, 91, 99, 29, 29, 29, 29, 29, 29, 29, 90, 91, 92, 99, 39, 39, 39, 39, 39, 39, 90, 91, 92, 93, 99, 49, 49, 49, 49, 49, 90, 91, 92, 93, 94, 99, 59, 59, 59, 59, 90, 91, 92, 93, 94, 95, 99, 69, 69, 69 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,10

COMMENTS

a(n) = Sum_{p is a lunar divisor of n} p. (Each prime appears at most once in this sum.)

LINKS

Table of n, a(n) for n=1..69.

D. Applegate, C program for lunar arithmetic and number theory [Note: we have now changed the name from "dismal arithmetic" to "lunar arithmetic" - the old name was too depressing]

D. Applegate, M. LeBrun and N. J. A. Sloane, Dismal Arithmetic [Note: we have now changed the name from "dismal arithmetic" to "lunar arithmetic" - the old name was too depressing]

Index entries for sequences related to dismal (or lunar) arithmetic

CROSSREFS

Cf. A088469, A088471, A087097.

Sequence in context: A257445 A138692 A057455 * A147676 A045097 A074817

Adjacent sequences:  A088467 A088468 A088469 * A088471 A088472 A088473

KEYWORD

nonn

AUTHOR

David Applegate, Nov 11 2003

STATUS

approved

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Last modified March 26 10:42 EDT 2017. Contains 284111 sequences.