A308573 Decimal expansion of convergent series Sum_{n >= 1} (cos(n)/2)^n.

2, 1, 6, 3, 5, 1, 4, 6, 7, 6, 0, 0, 3, 2, 5, 7, 8, 4, 2, 4, 2, 9, 5, 8, 1, 5, 3, 7, 4, 7, 2, 4, 8, 3, 0, 7, 5, 3, 3, 9, 8, 8, 9, 4, 6, 7, 9, 3, 6, 1, 7, 3, 8, 8, 2, 9, 3, 9, 4, 9, 4, 1, 7, 7, 7, 4, 6, 0, 1, 9, 9, 5, 3, 9, 2, 9, 5, 7, 0, 8, 0, 5, 2, 2, 1, 2, 9, 9, 9, 2, 7, 5, 5, 1, 7, 9, 9, 2, 0, 9, 5, 5, 7, 7, 9, 3, 1, 9, 9, 8, 1, 5, 8, 2, 9, 2, 1, 1, 7, 0

Offset

0,1

Links

Table of n, a(n) for n=0..119.

Example

0.2163514676003257842429581537472483...

Prog

(PARI) suminf(n = 1, (cos(n) / 2)^n) \\ Michel Marcus, Jun 08 2019

Crossrefs

Sequence in context: A249990 A097288 A223894 * A171178 A100014 A062566

Adjacent sequences: A308570 A308571 A308572 * A308574 A308575 A308576

Keyword

nonn,cons

Author

Neven Sajko, Jun 08 2019

Status

approved