A135384 Numbers which converge to 2592 under repeated application of the powertrain map of A133500.

642, 2164, 2534, 2592, 3425, 6421, 9225, 10642, 11642, 12642, 13642, 14642, 15642, 16642, 17642, 18642, 19642, 20642, 21636, 21641, 22348, 22633, 22928, 23344, 23629, 23924, 24336, 24342, 24922, 25329, 25333, 25341, 25919, 25921, 30642, 31634, 32259

Offset

1,1

Comments

Many of these numbers reach 2592 in one step. Examples of numbers which take more than one step are 45756, 52648, 63724, 64528, 72634, 75456.

Links

N. J. A. Sloane, Table of n, a(n) for n = 1..169

Prog

(Python) # aupto in A326735
print(aupto(32259, target=2592)) # Michael S. Branicky, Feb 21 2021

Crossrefs

Cf. A133500, A135385.

Sequence in context: A229851 A268840 A230715 * A253420 A289649 A271039

Adjacent sequences: A135381 A135382 A135383 * A135385 A135386 A135387

Keyword

nonn,base

Author

J. H. Conway and N. J. A. Sloane, Dec 10 2007

Status

approved