A246136 Numbers that are palindromic right angle numbers in base 8.
211, 227, 373, 503, 32119, 856147, 2054519, 131479927
Offset: 1
Examples
856147 is in the list since it is prime and is equal to 3210123 in base 8.
Programs
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Python
from sympy import isprime A246136 = [] for n in range(1,8): for m in range(n-1,-1,-1): l = ''.join([str(d) for d in range(n,m-1,-1)]) p = int(l+l[-2::-1],8) if isprime(p): A246136.append(p) for m in range(n+1,8): l = ''.join([str(d) for d in range(n,m+1)]) p = int(l+l[-2::-1],8) if isprime(p): A246136.append(p) A246136 = sorted(A246136)