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A249046 Self-numbers (A003052) that are multiples of 3 but not of 9. 2
3, 42, 75, 132, 165, 222, 255, 312, 345, 411, 435, 501, 525, 591, 615, 681, 714, 771, 804, 861, 894, 951, 984, 1032, 1065, 1122, 1155, 1212, 1245, 1311, 1335, 1401, 1425, 1491, 1515, 1581, 1614, 1671, 1704, 1761, 1794, 1851, 1884, 1941, 1974, 2022, 2055, 2112, 2145 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
REFERENCES
D. R. Kaprekar, The Mathematics of the New Self Numbers, Privately printed, 311 Devlali Camp, Devlali, India, 1963.
LINKS
D. R. Kaprekar, The Mathematics of the New Self Numbers [annotated and scanned]
PROG
(Haskell)
a249046 n = a249046_list !! (n-1)
a249046_list = filter ((> 0) . flip mod 9) a249045_list
-- Reinhard Zumkeller, Oct 31 2014
CROSSREFS
Sequence in context: A238717 A057013 A055755 * A237661 A116006 A079826
KEYWORD
nonn,base
AUTHOR
N. J. A. Sloane, Oct 30 2014
STATUS
approved

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Last modified April 21 19:25 EDT 2024. Contains 371885 sequences. (Running on oeis4.)