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

Author

Axel Harvey, Sep 14 2004

Keywords

• nonn
• base

Comments

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

Examples

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

Links

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

Crossrefs

Cf. A005150, A007090.

Formula

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

Extensions

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