Follow

Who even needs the binomial theorem?

(20+25)²=2025

(30+25)²=3025

(68320+14336)²=6832014336

(60494+17284)²=6049417284

and so on.

http://oeis.org/A102766

. It's seem to relate #ENWP 「Kaprekar number」 https://en.wikipedia.org/wiki/Kaprekar_number . It's new to me. Thanks!

AskChip@AskChip@mastodon.technology@jsiehler I tried:

(2125+4231)²=40398736. Does this only work for cherry picked numbers?