Project Euler Problem 446 – Retractions B (Sample Values)

Spoiler Alert! This blog entry contains content that might help you solve problem 446 of Project Euler. Please don’t read any further if you have yet to attempt to solve the problem on your own. The information is intended for those who failed to solve the problem and are looking for hints. It is posted not before the problem has a hundred solvers already.

Values for R(n) [custom_table style=”4″]

n R(n)
1 1
12 20
123 168
1234 1854
12345 9776
123456 7440
1234567 4416
12345678 5360
123456789 8320

Values for ∑R(n4+4)

N F(N)
21 11
22 194
23 2916
24 92120
25 2745876
26 77113276
27 2483897180
28 76908101824
29 2441819340776
210 77532377300600
211 2483097302086812
212 79119180249174480
213 2533036300313557112
214 81052743190199862544
215 2593086363335525462040
216 82979577689648147216188
217 2655142373287977199085748
218 84962979860811250120051472
219 2718822070363420893676076256
220 87001268229629480104239721116
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