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A002116
Some special numbers.
(Formerly M2125 N0842)
1
2, 20, 402, 14440, 825502, 69055260, 7960285802, 1209873973712
OFFSET
0,1
REFERENCES
A. Fletcher, J. C. P. Miller, L. Rosenhead and L. J. Comrie, An Index of Mathematical Tables. Vols. 1 and 2, 2nd ed., Blackwell, Oxford and Addison-Wesley, Reading, MA, 1962, Vol. 1, p. 77.
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).
CROSSREFS
Sequence in context: A090728 A210896 A090309 * A058346 A165554 A366447
KEYWORD
nonn,more
STATUS
approved