A308106 -id:A308106 - cp's OEIS frontend

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A308104 Distinct values taken by the DENEAT operator (A073053) in increasing order.

Original entry on oeis.org

11, 22, 33, 44, 55, 66, 77, 88, 99, 101, 112, 123, 134, 145, 156, 167, 178, 189, 202, 213, 224, 235, 246, 257, 268, 279, 303, 314, 325, 336, 347, 358, 369, 404, 415, 426, 437, 448, 459, 505, 516, 527, 538, 549, 606, 617, 628, 639, 707, 718, 729, 808, 819, 909, 1010

Offset: 1

Rémy Sigrist, May 13 2019

This sequence corresponds to numbers of the form e.o.(e+o) with e, o >= 0 and e+o > 0 (where "." denotes concatenation in decimal).

This sequence first differs from A108203 for n = 55: a(55) = 1010 whereas A108203(55) = 1001.

Rémy Sigrist, Scatterplot of the first difference of the first 188281 terms (the terms < 100000000)
Rémy Sigrist, PARI program for A308104

See A308106 for the values in order of appearance.

Cf. A073053, A108203.

PARI
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