The OEIS is supported by the many generous donors to the OEIS Foundation. Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A226055 a(n) is the first common term in column n of tables A225630 and A225640, when scanned from the top to bottom. 7
 1, 1, 2, 3, 4, 30, 6, 84, 120, 180, 210, 4620, 4620, 780, 360360, 360360, 240240, 92820, 12252240, 175560, 58198140, 116396280, 360360, 753480, 2677114440, 13385572200, 26771144400, 40156716600, 2677114440, 13665960, 2329089562800, 82990547640, 48134517631200 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 COMMENTS Consider an algorithm which finds a maximum value lcm(p1,p2,...,pk,prevmax) among all partitions {p1+p2+...+pk} of n, where the "seed number" prevmax is such a maximum value from the previous iteration. a(n) gives the first identical value encountered, after repeated iterations, when starting from the initial seed value 1, and when starting from the initial seed value of n. Equivalently, the first common term occurring on the row n of tables A225632 and A225642, when scanning the rows from the left. These are A225638(n)-th and A225639(n)-th terms from the beginning of each row, respectively. LINKS Table of n, a(n) for n=0..32. Index entries for sequences related to lcm's FORMULA a(n) = A225630(A225638(n),n) = A225640(A225639(n),n). EXAMPLE Row 8 of A225632 is 1, 15, 120, 840; Row 8 of A225642 is 8, 120, 840; Their first common term from the left is 120, thus a(8)=120. PROG (Scheme): (define (A226055 n) (A225630bi n (A225638 n))) (define (A226055 n) (A225640bi n (A225639 n))) ;; Alternative definition. ;; The Scheme-definitions of A225630bi and A225640bi given respectively in A225630 and A225640. CROSSREFS Cf. A225630, A225640, A225638, A225639. Also, a(n) is the A226056(n)-th rightmost term on the row n in tables A225632 and A225642. Sequence in context: A059614 A333074 A241974 * A028426 A024633 A326829 Adjacent sequences: A226052 A226053 A226054 * A226056 A226057 A226058 KEYWORD nonn AUTHOR Antti Karttunen, May 24 2013 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 May 29 11:38 EDT 2023. Contains 363042 sequences. (Running on oeis4.)