A367615 - OEIS

A367615

Numbers that have a comma-successor.

1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 19, 20, 21, 22, 23, 24, 25, 26, 28, 29, 30, 31, 32, 33, 34, 35, 37, 38, 39, 40, 41, 42, 43, 44, 46, 47, 48, 49, 50, 51, 52, 53, 55, 56, 57, 58, 59, 60, 61, 62, 64, 65, 66, 67, 68, 69, 70, 71, 73, 74, 75

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,2

COMMENTS

This is the complement to A367341.

The actual successors are given in A367340.

See A367338 for definition.

LINKS

Michael S. Branicky, Table of n, a(n) for n = 1..10000

Eric Angelini, Michael S. Branicky, Giovanni Resta, N. J. A. Sloane, and David W. Wilson, The Comma Sequence: A Simple Sequence With Bizarre Properties, arXiv:2401.14346, Youtube

MATHEMATICA

fQ[n_]:=Module[{k=n+10*Last[IntegerDigits[n]]+Range[9]}, Select[k, #-n==FromDigits[{Last[IntegerDigits[n]], First[IntegerDigits[#]]}]&]]!={};

Select[Range[75], fQ[#]&] (* Ivan N. Ianakiev, Dec 18 2023 *)

CROSSREFS

Cf. A121805, A367338, A367340, A367341

Sequence in context: A325360 A325400 A342523 * A249830 A300473 A271980

Adjacent sequences: A367612 A367613 A367614 * A367616 A367617 A367618

KEYWORD

nonn,base

AUTHOR

N. J. A. Sloane, Dec 18 2023

EXTENSIONS

More terms from Michael S. Branicky, Dec 18 2023

STATUS

approved