The first ten terms of the sequence of numbers of permutations of length n a\

    voiding 1234 and 1k(k-1)...2 for k=, 3,  is , 1, 2, 5, 13, 34, 89, 233, 610,

    1597

The first ten terms of the sequence of numbers of permutations of length n a\

    voiding 1234 and 1k(k-1)...2 for k=, 4,  is , 1, 2, 6, 22, 86, 342, 1366,

    5462, 21846

The first ten terms of the sequence of numbers of permutations of length n a\

    voiding 1234 and 1k(k-1)...2 for k=, 5,  is , 1, 2, 6, 23, 102, 487, 2403,

    12021, 60470

The first ten terms of the sequence of numbers of permutations of length n a\

    voiding 1234 and 1k(k-1)...2 for k=, 6,  is , 1, 2, 6, 23, 103, 512, 2724,

    15101, 85693

The first ten terms of the sequence of numbers of permutations of length n a\

    voiding 1234 and 1k(k-1)...2 for k=, 7,  is , 1, 2, 6, 23, 103, 513, 2760,

    15717, 93222

The first ten terms of the sequence of numbers of permutations of length n a\

    voiding 1234 and 1k(k-1)...2 for k=, 8,  is , 1, 2, 6, 23, 103, 513, 2761,

    15766, 94294

The first ten terms of the sequence of numbers of permutations of length n a\

    voiding 1234 and 1k(k-1)...2 for k=, 9,  is , 1, 2, 6, 23, 103, 513, 2761,

    15767, 94358

The first ten terms of the sequence of numbers of permutations of length n a\

    voiding 1234 and 1k(k-1)...2 for k=, 10,  is , 1, 2, 6, 23, 103, 513, 2761,

    15767, 94359