Template:Sequence of the Day for January 30

Intended for: January 30, 2016

Timetable

• First draft completed by Daniel Forgues on January 30, 2016 ✓
• Draft to be reviewed by January 30, 2016
• Draft to be approved by January 30, 2016

Yesterday's SOTD * Tomorrow's SOTD

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A132393 Triangle of unsigned Stirling numbers of the first kind (see A048994), read by rows.

{ 1, 0, 1, 0, 1, 1, 0, 2, 3, 1, 0, 6, 11, 6, 1, ... }

This triangle is also referred to as the factorial triangle, where

n ∑   k  = 0    T  (n, k )  =  T  (n + 1, 1)  =  n!, n ≥ 0.