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Symmetric array of numeric partitions related to 1 4 9 16 ... and 1 3 4 7 13 ..., read by rows.
0

%I #6 Mar 31 2012 13:23:36

%S 1,1,1,1,1,2,1,2,3,2,1,3,5,3,1,1,5,7,5,1,2,7,11,7,2,3,11,15,11,3,5,15,

%T 22,15,5,1,7,22,30,22,7,1,1,11,30,42,30,11,1,2,15,42,56,42,15,2,3,22,

%U 56,77,56,22,3,5,30,77,101,77,30,5,7,42,101,135,101,42,7,11,56,135,176

%N Symmetric array of numeric partitions related to 1 4 9 16 ... and 1 3 4 7 13 ..., read by rows.

%C Begin with row zero and generate a column of values using the sequence of numeric partitions (A000041). At rows 1 4 9 16 25 ... A000290, generate two new columns one each to the left and right of existing columns. Note that the row sums appear to be A029552.

%D Kass, Moody, Patera and Slansky (1990), Affine Lie Algebras, Weight Multiplicities and Branching Rules. University of California Press. Vol. I, page 108.

%e The array begins:

%e ........................1

%e ................1.......1.......1

%e ................1.......2.......1

%e ................2.......3.......2

%e ........1.......3.......5.......3.......1

%e ........1.......5.......7.......5.......1

%e ........2.......7.......11......7.......2

%e ........3.......11......15......11......3

%e ........5.......15......22......15......5

%e 1.......7.......22......30......22......7.......1

%e 1.......11......30......42......30......11......1

%e 2.......15......42......56......42......15......2

%e 3.......22......56......77......56......22......3

%e 5.......30......77......101.....77......30......5

%Y A000041, A000290, A029552 and A049597.

%K easy,nonn,tabf

%O 0,6

%A _Alford Arnold_, Mar 06 2001