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 A107346 #32 Jun 16 2016 23:27:28
%S A107346 9,81,18,81,9,702,9,171,27,72,18,693,18,72,27,171,9,702,9,81,18,81,9,
%T A107346 5913,9,81,18,81,9,1602,9,261,36,63,27,594,18,162,36,162,18,603,9,171,
%U A107346 27,72,18,5814,9,171,27,72,18,603,9,261,36,63,27,1584,27,63,36,261,9
%N A107346 Differences between successive permutations of 1,2,3,4,5 regarded as decimal numbers arranged in increasing order.
%C A107346 We can produce similar sequences of length n!-1 from all the n-set permutations (1,...,n), starting from n=2 up to n=9. The next larger sequence contains always the preceding sequence as its proper prefix. See A219664 for the largest such sequence. - _Antti Karttunen_, Dec 18 2012
%C A107346 See A209280 for the extension of this sequence to 9!-1 terms, and for comments and formulas which apply to this subsequence. - _M. F. Hasler_, Jan 15 2013
%H A107346 T. D. Noe, <a href="/A107346/b107346.txt">Table of n, a(n) for n = 1..119</a> (complete sequence)
%F A107346 a(n) = A209280(n) for n<5!. See there for more useful relations. - _M. F. Hasler_, Jan 15 2013
%e A107346 Permutations are 12345, 12354, 12435, ...
%e A107346 a(3) = 18 because if we order these permutations (ascending), then P(4)-P(3) = 12453-12435 = 18
%t A107346 Differences[FromDigits /@ Permutations[{1, 2, 3, 4, 5}]] (* _T. D. Noe_, Dec 18 2012 *)
%o A107346 (PARI) A107346(n)=A209280(n) \\ - _M. F. Hasler_, Jan 15 2013
%Y A107346 Cf. A030299, A219664, A209280.
%K A107346 easy,nonn,base,fini,full
%O A107346 1,1
%A A107346 Ivan Meyer (ivan.mey(AT)gmail.com), May 23 2005