It is now three years since I first asked for support, and I would like to sincerely thank everyone who has helped me. BrainBashers doesn't show adverts, and I continue to depend on the ongoing support from everyone who enjoys the site.
???
What number comes next in this sequence:
1 4 11 20 31 44 {?}
Puzzle Copyright © Kevin Stone
workings hint hide answer print
Share link: https://www.brainbashers.com/
Answer
61.
Each term is a square expressed in base eight, 7 2=49 = 61 in base 8.
Note: BrainBashers has a Dark Mode option. For BrainBashers, I'd recommend not using your browser's built-in dark mode, or any dark mode extensions (sometimes you can add an exception for a specific website).