A098097 Terms of sequence A005150 interpreted as numbers written in base 4 (written here in base ten).

1, 5, 9, 101, 1385, 3493, 30121, 358885, 225859433, 521661150629, 1537769393977769, 248286184577158309349, 2349690596380762356487460713, 7261901690904608168867803518651168165, 76840829143792845266223009702402770017026931113

Offset

1,2

Comments

The terms in A005150 contain no digits other than 1, 2, and 3, so they can be read as numbers in base 4.

Links

Edward Krogius, Table of n, a(n) for n = 1..25

Formula

A005150(n) = A007090(a(n)). - Michel Marcus, Jun 22 2024

Example

A005150(5) = 111221, and 111221_4 = 1385.

Crossrefs

Cf. A005150, A007090.

Sequence in context: A171812 A221741 A344080 * A279707 A329002 A280642

Adjacent sequences: A098094 A098095 A098096 * A098098 A098099 A098100

Keyword

nonn,base

Author

Axel Harvey, Sep 14 2004

Extensions

a(13)-a(15) added by Andrew Howroyd, Feb 12 2020

Status

approved