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Appear to be the The sums of each column of A117317 with its subsequent column, treated as a lower triangular matrix with an initial null column attached, or, equivalently, the products of the row polynomials p(n,y) of A117317 with (1+y) with the initial first row below added to the final result. The reversal of A117317 is A056242 with several combinatorial interpretations. - Tom Copeland, Jan 08 2017
G.f.: (1-(1+y)*x)/(1-2(1+y)*x+(y+y^2)*x^2). - Philippe Deléham, Dec 19 2011
O.g.f. corrected by Tom Copeland, Jan 15 2017
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Appear to be the sums of each column of A117317 with its subsequent column , treated as a lower triangular matrix with an initial null columns column attached to both sides, , or, equivalently, the products of the row polynomials p(n,y) of A117317 with (1+y) with the initial first row below added to the final result. The reversal of A117317 is A056242 with several combinatorial interpretations. - Tom Copeland, Jan 08 2017
Appear to be the sums of each column of A117317 with its subsequent column treated as a lower triangular matrix with null columns attached to both sides, or, equivalently, the products of the row polynomials p(n,y) of A117317 with (1+xy) with the initial first row below added to the final result. - Tom Copeland, Jan 08 2017
Appears Appear to be the sums of each column of A117317 with the its subsequent column of A117317 treated as a lower triangular matrix with null columns attached to both sides, or, equivalently, the products of the row polynomials of A117317 with (1+x). - Tom Copeland, Jan 08 2017
Appears to be the sum sums of adjacent columns each column with the subsequent column of A117317 treated as a lower triangular matrix with null columns attached to both sides. - Tom Copeland, Jan 08 2017
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