|
| |
| |
|
|
|
1, 3, 10, 32, 100, 312, 988, 3208, 10728, 36944, 130604, 471880, 1734616, 6461808, 24317080, 92222288, 351854032, 1348762016, 5189792716, 20031335240, 77516440696, 300630949424, 1168151092552, 4546596321392, 17721978842800
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 0,2
|
|
|
FORMULA
| Superseeker suggested (1-x+ 2 I x^2/Sqrt[ -1+ 4 x])/(1-2 x)^2, first 32 terms agreeing.
|
|
|
MATHEMATICA
| Table[Sum[(# Conjugate[ # ]&)@ Sum[Binomial[n, t] I^t, {t, 0, k}], {k, 0, n}], {n, 0, 32}] or also CoefficientList[Series[(1-x+2I x^2/Sqrt[ -1+4x])/(1-2x)^2, {x, 0, 32}], x]
|
|
|
CROSSREFS
| Cf. A092821.
Sequence in context: A104270 A038731 A053581 * A017935 A134377 A077826
Adjacent sequences: A092819 A092820 A092821 * A092823 A092824 A092825
|
|
|
KEYWORD
| easy,nonn
|
|
|
AUTHOR
| Wouter Meeussen (wouter.meeussen(AT)pandora.be), Mar 06 2004
|
| |
|
|
