|
| |
|
|
A121869
|
|
Monthly Problem 10791, first expression.
|
|
1
| |
|
|
-1, 1, 0, -5, -15, 104, 1827, 7893, -207000, -5646249, -47897675, 1479282600, 74711288407, 1396956334921, -21032523700672, -2719998717430365, -104158663871982343, -715846242343471272, 189941380201812700699, 14820744271258596866013, 507768838531742620183176
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 0,4
|
|
|
REFERENCES
| A. Fekete and others, Problem 10791, Amer. Math. Monthly, 108 (No. 2, 2001), 177-178.
|
|
|
FORMULA
| Equals A024429(n)^2 - A024430(n)^2.
|
|
|
CROSSREFS
| Cf. A121870, A024429, A024430, A121867, A121868.
Sequence in context: A054363 A184438 A134135 * A118412 A068622 A080449
Adjacent sequences: A121866 A121867 A121868 * A121870 A121871 A121872
|
|
|
KEYWORD
| sign
|
|
|
AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com), Sep 05 2006
|
| |
|
|
