A000471 a(n) = floor(sinh(n)).

0, 1, 3, 10, 27, 74, 201, 548, 1490, 4051, 11013, 29937, 81377, 221206, 601302, 1634508, 4443055, 12077476, 32829984, 89241150, 242582597, 659407867, 1792456423, 4872401723, 13244561064, 36002449668, 97864804714, 266024120300, 723128532145, 1965667148572

Offset

0,3

Links

T. D. Noe, Table of n, a(n) for n = 0..200

Formula

a(n) = floor(e^n/2). - Bruno Berselli, Mar 04 2016

Mathematica

Table[Floor[Sinh[n]], {n, 0, 50}] (* Stefan Steinerberger, Apr 15 2006 *)
Table[Floor[E^n/2], {n, 0, 30}] (* Bruno Berselli, Mar 04 2016 *)

Crossrefs

Cf. A000501, A001113.

Sequence in context: A309300 A271357 A085948 * A000501 A154496 A027251

Adjacent sequences: A000468 A000469 A000470 * A000472 A000473 A000474

Keyword

nonn

Author

Simon Plouffe

Extensions

More terms from Stefan Steinerberger, Apr 15 2006

Status

approved