A176434 Decimal expansion of (7+3*sqrt(7))/2.

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

Offset

1,1

Comments

Continued fraction expansion of (7+3*sqrt(7))/2 is A010697 preceded by 7.

Links

Daniel Starodubtsev, Table of n, a(n) for n = 1..10000

Index entries for algebraic numbers, degree 2.

Formula

Minimal polynomial: 2*x^2 - 14*x - 7. - Amiram Eldar, Apr 01 2026

Example

7.46862696659688588575242363045889063856538877462367...

Mathematica

RealDigits[(7 + 3*Sqrt[7])/2, 10, 120][[1]] (* Amiram Eldar, Apr 01 2026 *)

Crossrefs

Cf. A010465 (decimal expansion of sqrt(7)), A010697 (repeat 2, 7).

Sequence in context: A347909 A395267 A085665 * A027625 A160575 A194361

Adjacent sequences: A176431 A176432 A176433 * A176435 A176436 A176437

Keyword

cons,nonn

Author

Klaus Brockhaus, Apr 19 2010

Status

approved