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A249048
Self-numbers (A003052) that are multiples of 9.
4
9, 108, 198, 288, 378, 468, 558, 648, 738, 828, 918, 1098, 1188, 1278, 1368, 1458, 1548, 1638, 1728, 1818, 1917, 2007, 2088, 2178, 2268, 2358, 2448, 2538, 2628, 2718, 2817, 2907, 2997, 3078, 3168, 3258, 3348, 3438, 3528, 3618, 3717, 3807, 3897, 3987, 4068, 4158, 4248
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)
a249048 n = a249048_list !! (n-1)
a249048_list = filter ((== 0) . flip mod 9) a003052_list
-- Reinhard Zumkeller, Oct 31 2014
CROSSREFS
KEYWORD
nonn,base
AUTHOR
N. J. A. Sloane, Oct 30 2014
STATUS
approved