A072715 Record differences between n-th prime and 2n-th prime.

1, 4, 8, 12, 18, 24, 26, 34, 38, 42, 48, 52, 60, 64, 66, 78, 80, 90, 96, 102, 108, 114, 116, 134, 138, 148, 156, 162, 168, 180, 198, 200, 208, 216, 220, 230, 236, 242, 252, 264, 266, 280, 294, 312, 324, 330, 336, 342, 344, 350, 370, 378, 390, 394, 408, 420, 426