Banjo Amaj7 chord (Open D)A major seventh on the 5-string banjo: 7 7 7 6, and 2 more shapes

Frets, string 4 to string 1: 7 7 7 6 (from the 6th fret)

1. String 4 (D): 7th fret, middle finger, A
2. String 3 (F♯): 7th fret, ring finger, C♯
3. String 2 (A): 7th fret, little finger, E
4. String 1 (D): 6th fret, index finger, G♯
5. String 5, the short f♯: open, F♯, not in the chord

Sounds: A C♯ E G♯  ·  Amaj7 is A, C♯, E, G♯ (1 · 3 · 5 · 7)

The 5th string: the short f♯ adds the 6th over Amaj7, a colour rather than a clash.

With a capo: on the 2nd fret it’s 0 1 2 0 (frets counted from the capo), an open Gmaj7 shape. Spike the 5th string at the 7th fret to keep it in tune with the capo.

Open D tuning: f♯DF♯AD, the short 5th string first, then strings 4 to 1.