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A000490
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Generalized Euler numbers.
(Formerly M5027 N2169)
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1
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1, 16, 1280, 249856, 90767360, 52975108096, 45344872202240, 53515555843342336, 83285910482761809920, 165262072909347030040576, 407227428060372417275494400, 1219998300294918683087199010816
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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REFERENCES
| D. Shanks, Generalized Euler and class numbers, Math. Comp. 21 (1967), 689-694; 22 (1968), 699.
N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
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FORMULA
| a(n)=A000364(n)*16^n . - Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Oct 27 2006
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CROSSREFS
| Cf. A000187.
Sequence in context: A064346 A113104 A186856 * A027648 A016828 A072161
Adjacent sequences: A000487 A000488 A000489 * A000491 A000492 A000493
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KEYWORD
| nonn,easy
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
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EXTENSIONS
| More terms from Kok Seng Chua (chuaks(AT)ihpc.nus.edu.sg), Jun 02 2000
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