var bytes = new byte[] {0x01, 0x02, 0x03, 0x62, 0x61, 0x72, 0x56, 0x10}.AsSequence();
var seq = new byte[] {0x2};
var seqIndex = bytes.IndexOfSlice(seq);
var afterSequence = bytes.Skip(seqIndex + seq.Length);
int n = afterSequence.Head;
var result = afterSequence.Skip(1).Take(n);