A091341 Natural numbers written out with their digits grouped in sets of 5 (leading zeros omitted).

12345, 67891, 1112, 13141, 51617, 18192, 2122, 23242, 52627, 28293, 3132, 33343, 53637, 38394, 4142, 43444, 54647, 48495, 5152, 53545, 55657, 58596, 6162, 63646, 56667, 68697, 7172, 73747, 57677, 78798, 8182, 83848, 58687, 88899, 9192, 93949