A121366 a(n) = 2^(n*(3n+5)/2) = 2^A115067(n+1).

1, 16, 2048, 2097152, 17179869184, 1125899906842624, 590295810358705651712, 2475880078570760549798248448, 83076749736557242056487941267521536, 22300745198530623141535718272648361505980416

Offset

0,2

Comments

Apparently this sequence is the Hankel transform of A098329 = [1, 1, 17, 49, 481, 2081, ...]; example : Det([1]) = 1, Det([1,1 ; 1,17]) = 16, Det([1,1,17 ; 1,17,49 ; 17,49,481]) = 2048, ...

Links

Table of n, a(n) for n=0..9.

Crossrefs

Cf. A098329, A115067.

Sequence in context: A291828 A086804 A317450 * A101800 A208148 A265593

Adjacent sequences: A121363 A121364 A121365 * A121367 A121368 A121369

Keyword

nonn

Author

Philippe Deléham, Sep 06 2006

Status

approved