This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A048936 #29 Mar 14 2025 19:02:46 %S A048936 125460,11930170,12054060,12417993,12600324,12827650,13002462, %T A048936 22569480,23287176,26198073,26373600,26839800,46847920,61360780, %U A048936 1001795850,1013265360,1017509850,1018172470,1044022896,1047395790 %N A048936 Subset of vampire numbers A014575 having exactly two representations of the desired form. %D A048936 C. A. Pickover, "Vampire Numbers." Ch. 30 in Keys to Infinity. New York: Wiley, pp. 227-231, 1995. %H A048936 Shyam Sunder Gupta, <a href="https://doi.org/10.1007/978-981-97-2465-9_20">Cab and Vampire Numbers</a>, Exploring the Beauty of Fascinating Numbers, Springer (2025) Ch. 20, 499-512. %H A048936 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/VampireNumber.html">Vampire Number.</a> %e A048936 125460 = 204*615 = 246*510. %e A048936 11930170 = 1301*9170 = 1310*9107. %e A048936 12054060 = 2004*6015 = 2406*5010. %Y A048936 Closely related: A020342, A014575, A080718, A280928, A144563. %Y A048936 Cf. A014575, A048933, ..., A048939. %K A048936 nonn,base %O A048936 1,1 %A A048936 _Eric W. Weisstein_ %E A048936 Edited by _N. J. A. Sloane_, Jan 03 2009 %E A048936 Name edited by _M. F. Hasler_, Mar 11 2021