1,10

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

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

Cf. A088469, A088471, A087097.

Sequence in context: A257445 A138692 A057455 * A147676 A045097 A074817

Adjacent sequences: A088467 A088468 A088469 * A088471 A088472 A088473

nonn

David Applegate, Nov 11 2003

approved