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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.

A138533 Resort the multinomial sequence A036038 by source partition as described in A126442, A129306 and A136101.

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%I A138533 #7 Apr 15 2015 05:26:56
%S A138533 1,2,1,6,3,1,24,12,4,1,6,120,60,20,5,1,30,10,720,360,120,30,6,1,180,
%T A138533 60,15,20,90
%N A138533 Resort the multinomial sequence A036038 by source partition as described in A126442, A129306 and A136101.
%C A138533 Multinomials count permutations of multisets and also paths in lattices; for example, there are six paths (from null to full) through the lattice of divisors for signature 36: 2233 2323 2332 3223 3232 and 3322.
%e A138533 a(11) is six because the eleventh least prime signature in source format is 36 the signature for partition 2+2 the ninth partition and A036038(9) = 6.
%e A138533 The tables begin:
%e A138533 1.......2.......6.......24......120.....720....5040.....40320......362880
%e A138533 ........1.......3.......12.......60.....360....2520.....20160......181440
%e A138533 ................1.......4........20.....120.....840......6720.......60480
%e A138533 ........................1........5.......30.....210......1680.......15120
%e A138533 .. ..............................1........6......42......336........3024
%e A138533 ..........................................1.......7.......56.........504
%e A138533 ..................................................1........8..........72
%e A138533 ...........................................................1...........9
%e A138533 .......................................................................1
%e A138533 ........................6........30.....180....1260....10080........90720
%e A138533 .................................10......60.....420.....3360........30240
%e A138533 ...
%Y A138533 Cf. A000142 A001710 A005651 (column sums) A025487 A053445.
%Y A138533 Cf. A173333. [From _Reinhard Zumkeller_, Feb 19 2010]
%K A138533 nonn,tabf
%O A138533 1,2
%A A138533 _Alford Arnold_, Mar 27 2008