A088470 Lunar sum of distinct lunar prime divisors of n.

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

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]

D. Applegate, M. LeBrun, N. J. A. Sloane, Dismal Arithmetic, J. Int. Seq. 14 (2011) # 11.9.8.

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