Template:Sequence of the Day for October 6

Intended for: October 6, 2011

Timetable

• First draft entered by Daniel Forgues on October 5, 2019 ✓
• Draft to be reviewed by August 6, 2011
• Draft to be approved by September 6, 2011

Yesterday's SOTD * Tomorrow's SOTD

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A004001 Hofstadter–Conway $10000 sequence:

a (n) = a (a (n  −  1)) + a (n  −  a (n  −  1))

with

a (1) = a (2) = 1

.

{ 1, 1, 2, 2, 3, 4, 4, 4, 5, 6, 7, 7, 8, 8, 8, 8, 9, 10, 11, 12, 12, ... }

Read the story about the prize in the first comment of the sequence entry in the OEIS!