The numbers don't come out even. Assuming 1/4 inch spacing, 136 bricks will definitely be sufficient; you could get by with a few less (around 128) by cutting some of the bricks lengthwise and using both halves.
Amsterdam covers an area of approximately 85 square miles.
There are 85 inches in 85 inches.
The area of Vivario is 85 square kilometers.
The area of Yepes is 85 square kilometers.
The area of Mazaleón is 85 square kilometers.
The area of Adásztevel is 85 square kilometers.
The area of Mesola is 85 square kilometers.
The area of Donggar is 85 square kilometers.
The area of Nerja is 85 square kilometers.
The area of Oliete is 85 square kilometers.
The area of Bisignano is 85 square kilometers.
No exponents needed. The prime factorization of 85 is: 5 x 17