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A245559 Triangle read by rows: entries on or below the main diagonal in A245558. 5

%I

%S 1,1,1,1,2,3,1,2,5,8,1,3,7,14,25,1,3,9,20,42,75,1,4,12,30,66,132,245,

%T 1,4,15,40,99,212,429,800,1,5,18,55,143,333,715,1430,2700,1,5,22,70,

%U 200,497,1144,2424,4862,9225,1,6,26,91,273,728,1768,3978,8398,16796,32065,1,6,30,112,364,1026,2652,6288,13995,29372,58786,112632

%N Triangle read by rows: entries on or below the main diagonal in A245558.

%C See A245558 for identification of other sequences occurring in this triangle.

%D Elashvili, A.; Jibladze, M.; Hermite reciprocity for the regular representations of cyclic groups. Indag. Math. (N.S.) 9 (1998), no. 2, 233--238. MR1691428 (2000c:13006).

%D Elashvili, A.; Jibladze, M.; Pataraia, D. Combinatorics of necklaces and "Hermite reciprocity''. J. Algebraic Combin. 10 (1999), no. 2, 173--188. MR1719140 (2000j:05009). See p. 174.

%e Triangle begins:

%e 1,

%e 1, 1,

%e 1, 2, 3,

%e 1, 2, 5, 8,

%e 1, 3, 7, 14, 25,

%e 1, 3, 9, 20, 42, 75,

%e 1, 4, 12, 30, 66, 132, 245,

%e 1, 4, 15, 40, 99, 212, 429, 800,

%e 1, 5, 18, 55, 143, 333, 715, 1430, 2700,

%e 1, 5, 22, 70, 200, 497, 1144, 2424, 4862, 9225,

%e 1, 6, 26, 91, 273, 728, 1768, 3978, 8398, 16796, 32065,

%e 1, 6, 30, 112, 364, 1026, 2652, 6288, 13995, 29372, 58786, 112632

%e ...

%Y Cf. A245558.

%K nonn,tabl

%O 1,5

%A _N. J. A. Sloane_, Aug 07 2014

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Last modified September 24 12:45 EDT 2022. Contains 356932 sequences. (Running on oeis4.)