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A159925
Row sums of triangle A159924.
3
1, 3, 12, 61, 370, 2606, 20925, 188772, 1890773, 20822481, 250082522, 3253176309, 45567394330, 683783923476, 10944068960451, 186098265906832, 3350501663825617, 63671208559149815, 1273621946395366224
OFFSET
1,2
COMMENTS
The sum of all terms in rows 1 through m of triangle A159924 is A159926(m). A159926(m) - A159926(m-1) = A159925(m), for m >= 2.
LINKS
MAPLE
A159924 := proc(n, m) option remember ; local s; if n = m then 1; else s := add(add(procname(r, c), c=1..r), r=1..n-1) ; procname(n-1, m)+s ; fi; end: A159925 := proc(n) local m; add( A159924(n, m), m=1..n) ; end: seq(A159925(n), n=1..40) ; # R. J. Mathar, Apr 29 2009
MATHEMATICA
Total /@ Block[{m = 0}, NestList[Block[{w = #}, AddTo[m, Total@ w]; Append[m + w, 1]] &, {1}, 18]] (* Michael De Vlieger, Oct 30 2017 *)
CROSSREFS
Sequence in context: A192479 A161799 A182970 * A331607 A235802 A317169
KEYWORD
nonn
AUTHOR
Leroy Quet, Apr 26 2009
EXTENSIONS
More terms from R. J. Mathar, Apr 29 2009
STATUS
approved