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A144271
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Row sums of triangle A144270 (called S2hat(-1)).
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2
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1, 2, 5, 21, 129, 1099, 11647, 148292, 2190302, 36842892, 694276152, 14488348603, 331537914373, 8254117606799, 222087256536602, 6421589319659283, 198565371839434761, 6538245667687424041, 228396692050813678534, 8436237099236470594589
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OFFSET
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1,2
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LINKS
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FORMULA
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a(n) = Sum_{m=1..n} A144270(n,m), n>=1.
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CROSSREFS
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KEYWORD
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nonn,easy
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AUTHOR
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STATUS
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approved
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