

A367469


a(n) is the total number of movable letters in all members of the partitions of [n].


1



0, 1, 6, 29, 140, 704, 3732, 20915, 123832, 773051, 5076174, 34973432, 252212600, 1899483793, 14908277490, 121701247649, 1031472019760, 9061405440156, 82384690078948, 774102548613907, 7507335441107420, 75055820357153647, 772694054961218802, 8182814265240466788
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OFFSET

1,3


LINKS



FORMULA

a(n) = (2*n  1)*B(n)/2  B(n+1)/2 + B(n1)/2, where B(n) = A000110(n).


MATHEMATICA

a[n_]:=(2n1)BellB[n]/2BellB[n+1]/2+BellB[n1]/2; Array[a, 24]


CROSSREFS



KEYWORD

nonn


AUTHOR



STATUS

approved



