The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A306962 Trajectory of 4 under repeated application of x -> A306958(x). 3
 4, 5040, 35282, 1845540, 1884971, 7867460, 3331441, 12260, 151391, 3659790, 8044561, 2005931, 3659862, 5776650, 1572481, 2454590, 3699451, 7444810, 2434331, 12340, 5861, 1995850, 9132491, 7263470, 1366651, 484580, 3669121, 3932030, 3631052, 182981, 7257710, 1844741, 2434340, 16651, 332660, 303931, 3630971, 4386251, 2001700, 604904, 3790082, 6048812, 3785141, 2455220, 65791, 4415050, 70572, 1239931, 7259150, 4294181, 5453390, 3695761, 4566970, 4571281, 2454590, 3699451, 7444810, 2434331, 12340, 5861 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS After 20 iterations the trajectory a cycle of length 39 starting with 5861. More than the usual number of terms are shown in order to display a full cycle. REFERENCES P. Kiss, A generalization of a problem in number theory, Math. Sem. Notes Kobe Univ., 5 (1977), no. 3, 313-317. MR 0472667 (57 #12362). LINKS Table of n, a(n) for n=1..60. P. Kiss, A generalization of a problem in number theory, [Hungarian], Mat. Lapok, 25 (No. 1-2, 1974), 145-149. H. J. J. te Riele, Iteration of number-theoretic functions, Nieuw Archief v. Wiskunde, (4) 1 (1983), 345-360. See Example I.1.d. Index entries for linear recurrences with constant coefficients, signature (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1). MATHEMATICA a[n_]:=Total[Binomial[10, #]*#!&/@IntegerDigits[n]]; NestWhileList[a, 4, UnsameQ, All] (* Ray Chandler, Nov 30 2023 *) CROSSREFS Cf. A306957, A306958, A306959, A306960, A306961. Sequence in context: A344670 A344671 A203036 * A102205 A283663 A046360 Adjacent sequences: A306959 A306960 A306961 * A306963 A306964 A306965 KEYWORD nonn,base AUTHOR N. J. A. Sloane, Mar 18 2019 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified June 25 07:38 EDT 2024. Contains 373697 sequences. (Running on oeis4.)