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Search: id:A122850
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| A122850 |
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Exponential Riordan array (1, sqrt(1+2x)-1). |
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+0
2
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| 1, 0, 1, 0, -1, 1, 0, 3, -3, 1, 0, -15, 15, -6, 1, 0, 105, -105, 45, -10, 1, 0, -945, 945, -420, 105, -15, 1, 0, 10395, -10395, 4725, -1260, 210, -21, 1, 0, -135135, 135135, -62370, 17325, -3150
(list; table; graph; listen)
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OFFSET
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0,8
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COMMENT
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Inverse of number triangle A122848. Entries are Bessel polynomial coefficients. Row sums are A000806.
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FORMULA
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Triangle begins 1, 0, 1, 0, -1, 1, 0, 3, -3, 1, 0, -15, 15, -6, 1, 0, 105, -105, 45, -10, 1, 0, -945, 945, -420, 105, -15, 1
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CROSSREFS
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Cf. A001497.
Adjacent sequences: A122847 A122848 A122849 this_sequence A122851 A122852 A122853
Sequence in context: A114795 A135009 A092747 this_sequence A132062 A065547 A065551
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KEYWORD
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easy,sign,tabl
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AUTHOR
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Paul Barry (pbarry(AT)wit.ie), Sep 14 2006
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