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URL: https://oeis.org/A048936

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A048936
Subset of vampire numbers A014575 having exactly two representations of the desired form.
10
125460, 11930170, 12054060, 12417993, 12600324, 12827650, 13002462, 22569480, 23287176, 26198073, 26373600, 26839800, 46847920, 61360780, 1001795850, 1013265360, 1017509850, 1018172470, 1044022896, 1047395790
OFFSET
1,1
REFERENCES
C. A. Pickover, "Vampire Numbers." Ch. 30 in Keys to Infinity. New York: Wiley, pp. 227-231, 1995.
LINKS
Shyam Sunder Gupta, Cab and Vampire Numbers, Exploring the Beauty of Fascinating Numbers, Springer (2025) Ch. 20, 499-512.
Eric Weisstein's World of Mathematics, Vampire Number.
EXAMPLE
125460 = 204*615 = 246*510.
11930170 = 1301*9170 = 1310*9107.
12054060 = 2004*6015 = 2406*5010.
CROSSREFS
Closely related: A020342, A014575, A080718, A280928, A144563.
Cf. A014575, A048933, ..., A048939.
Sequence in context: A206134 A364126 A237728 * A237066 A224583 A252208
KEYWORD
nonn,base
EXTENSIONS
Edited by N. J. A. Sloane, Jan 03 2009
Name edited by M. F. Hasler, Mar 11 2021
STATUS
approved