[pdurrant]

The final clues allowed me to make some half-remembered guesses.

Time for some maths!

Let's do some 'next in number sequences'. Some are harder than others. I'll be awarding points based on both my assessment of their difficulty, and how long it takes for someone to get them.

a) 1, 2, 3, 4, ?
b) 1, 3, 5, 7, ?
c) 1, 2, 4, 8, ?
d) 1, 0.5, 0.25, 0.125, ?
e) 1, 3, 6, 10, ?
f) 1, 4, 9, 16, ?
g) 1, 6, 15, 28, ?
h) 1, 1, 2, 3, ?
i) 2, 3, 5, 7, ?
j) 6, 28, 496, 8128, ?


For the last one I will accept the name of the numbers in the sequence, as most people would need to look up the answer, even if they recognise the sequence.