A067286 -id:A067286 - cp's OEIS frontend

A068798 Integers n such that n = A067030(j) for some j and A067286(j) < A067034(j).

4, 8, 11, 12, 16, 121, 198, 1717, 1757, 1797, 1818, 1837, 1858, 1877, 1898, 1938, 1978, 11011, 17127, 18018, 18887, 19998, 111001, 113201, 115401, 117601, 119801, 170217, 170617, 171017, 171227, 171417, 171627, 171817, 172027, 172427, 172827, 180018, 180418

Offset: 1

Klaus Brockhaus, Mar 05 2002

Integers n such that n = A067030(j) for some j and [largest integer k such that k is not of the form m + reverse(m) for any m (cf. A067031) and n occurs in the 'Reverse and Add' trajectory of k.] is smaller than [largest k such that n = k + reverse(k)]. - A067030(j) is a term iff A067034(j) is in A067030.

			4 = A067030(2) is in the sequence, since A067286(2) = 1 < 2 = A067034(2). 121 = A067030(21) is in the sequence, since A067286(21) = 92 < 110 = A067034(21).

Index entries for sequences related to Reverse and Add!

Cf. A067030, A067031, A067034, A067286.

More terms from Sean A. Irvine, Mar 15 2024

A067285 a(n) = smallest integer k such that k is not of the form m + reverse(m) for any m (cf. A067031) and A067030(n) occurs in the 'Reverse and Add' trajectory of k.

Original entry on oeis.org

0, 1, 1, 3, 1, 5, 5, 3, 7, 1, 9, 5, 3, 5, 7, 3, 1, 5, 9, 100, 7, 7, 3, 120, 49, 1, 130, 69, 5, 140, 89, 9, 150, 100, 160, 111, 170, 7, 180, 131, 190, 120, 151, 102, 130, 112, 171, 122, 140, 3, 191, 142, 152, 100, 162, 113, 172, 111, 182, 133, 192, 7, 153, 104, 131, 114

Offset: 0

Klaus Brockhaus, Feb 04 2002

a(n) <= A067033(n).

			a(14) = 7, since A067030(14) = 55 and the five integers 7, 23, 32, 41, 50 are not of the form m + reverse(m) for any m, 55 occurs in the trajectory of each of them and 7 is the smallest one. a(25) = 1, since A067030(25) = 154 and the eleven integers 1, 25, 34, 43, 52, 59, 61, 68, 70, 86, 95 are not of the form m + reverse(m) for any m, 154 occurs in the trajectory of each of them and 1 is the smallest one.

Index entries for sequences related to Reverse and Add!

Cf. A067030, A067031, A067033, A067284, A067286.

cp's OEIS Frontend

A068798 Integers n such that n = A067030(j) for some j and A067286(j) < A067034(j).

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