Its a nice series of problems and i think there are more than enough untied problems for another Sequence and Series problem group. So maybe Chris its about time to curate one :)
Thanks Nikolaos. I was thinking of making a group on primes, but one on sequences and series is a good idea.
I'm interested to see whether anyone uses my approach to this problem--especially after all of the solvers of my Connell sequence problem (Cody Problem 46615) to this point found the easy way.
Word Counting and Indexing
Calculate Euler's phi function
Magic is simple (for beginners)
Compute the nth term from the golden sieve
Solve an ODE: equation C
Find integer solutions to an equation with a sum of binomial coefficients
List composite numbers that cannot be written as the sum of two primes
Solve a Weird Calculator puzzle
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