Quick quiz

[spikydavid]

What's the next number in the sequence?

1 2 3 4 5 6 7 8 9 10 12 14 15 16 18 20 21 24 25 27 28 30 32 35 36 40 42 45 48 49 50 54 56 60 63 64 70 72 80 81 90

(Comments screened to prevent spoilers)

Comments

[borusa]

I wondered if this might be "all the retired numbers across the league"?

[spikydavid]

Regrettably not - all of 1-10 is reasonable, but no DEs above 90?

[spikydavid]

http://football.about.com/od/nflhistory/l/bl_retirednmbrs.htm