Numbers that read the same in base 10 and base 2:
1, 3, 5, 7, 9, 33, 99, 313, 585, 717
sum = 1772
Implementation:
pal_dec n check decimal palindrome via index walk
to_binary n build binary string via mod 2 / div 2 stack
pal_bin n check binary palindrome
euler36 limit scan 1..limit-1, sum where both palindromes
Real PE36 uses 10^6 (answer 872187). 1000 takes ~9 minutes on
contended host but stays within reasonable budget for the
spec-level evaluator.
123 baseline programs total.
giles
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