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A061696
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Generalized Bell numbers.
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4
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1, 0, 1, 1, 19, 101, 1776, 23717, 515971, 11893597, 346475728, 11497161545, 444592761746, 19536147771219, 970739908493421, 54010183143383066, 3341831947578263267, 228462339968313577341, 17160142419913160027448, 1409008382280004776187961
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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0,5
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LINKS
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FORMULA
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Sum_{n>=0} a(n) * x^n / (n!)^2 = exp(BesselI(0,2*sqrt(x)) - 1 - x). - Ilya Gutkovskiy, Jul 12 2020
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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