A116250 n times n+7 gives the concatenation of two numbers m and m-6.
95, 384, 428, 566, 610, 813, 995, 4520, 5474, 9995, 90909, 99995, 316831, 683163, 999995, 3636363, 6363631, 9999995, 82352941, 99999995, 331668331, 368421052, 395604390, 442767753, 461538461, 488721799, 511278195, 538461533
Offset: 1