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 A181706 #7 Mar 30 2012 18:52:59 %S A181706 1504,30592,8353792,2146926592,34357510144,549746900992,8796057370624, %T A181706 140737345748992,9223372000347553792,2361183240850707054592, %U A181706 9671406556879650002305024,154742504910523000781012992 %N A181706 Numbers of the form 2^(t-1)*(2^t-17), where 2^t-17 is prime. %C A181706 All entries are near-perfect numbers (A181595). The proof follows as in A181705, but this time the abundance is 16. %Y A181706 Cf. A059611, A181595, A181701, A000396, A181703, A181704, A181705. %K A181706 nonn %O A181706 1,1 %A A181706 _Vladimir Shevelev_, Nov 06 2010