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A360229
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Row sums of triangle A360173.
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2
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0, 1, 3, 6, 16, 36, 73, 156, 324, 677, 1405, 2864, 5906, 12058, 24548, 49928, 101434, 206173, 417141, 844256, 1707622, 3452998, 6970196, 14058528, 28368774, 57197983, 115239846, 232020596, 467296470, 940684267, 1892396396, 3805806218, 7654402454, 15391563411
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OFFSET
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0,3
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LINKS
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MAPLE
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b:= proc(n) option remember; `if`(n=0, 1, (p->
add((t-> `if`(i<n, 0, t*x^(i-n))+t*x^(i+n))(
coeff(p, x, i)), i=0..degree(p)))(b(n-1)))
end:
a:= proc(n) option remember; (p->
add(i*coeff(p, x, i), i=0..degree(p)))(b(n))
end:
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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