A370968 A008336 sorted and duplicates removed.

1, 2, 6, 20, 24, 120, 140, 858, 924, 1008, 1120, 10080, 11088, 12012, 12870, 176358, 184756, 194480, 205920, 3500640, 3695120, 3879876, 4056234, 87253605, 90262350, 93605400, 97349616, 2433740400, 2527345800, 2617608150, 2704861755, 57176602275, 79526843550, 81676217700, 84009823920, 86555576160, 2630123704650, 2687300306925, 2856334013280

Offset

1,2

Comments

In fact 1 is the only repeated term in A008336 (see that entry for proof).

Links

Michael De Vlieger, Table of n, a(n) for n = 1..2753

Michael De Vlieger, Plot p(i)^m(i) | a(n) at (x,y) = (n,i), n = 1..1024, 4X vertical exaggeration, with a color function where m(i) = 1 is black, m(i) = 2 is red, ... largest m(i) for n <= 1024 is in magenta.

Example

From Michael De Vlieger, Apr 11 2024: (Start)
Table of first terms showing exponents of prime factors p | a(n), with "." signifying p^0.
                 primes
                     1111
   n       a(n)  23571379
  -----------------------
   1         1   .
   2         2   1
   3         6   11
   4        20   2.1
   5        24   31
   6       120   311
   7       140   2.11
   8       858   11..11
   9       924   21.11
  10      1008   42.1
  11      1120   5.11
  12     10080   5211
  13     11088   42.11
  14     12012   21.111
  15     12870   121.11
  16    176358   11.1.111
  17    184756   2...1111
  18    194480   4.1.111
  19    205920   521.11
  20   3500640   521.111 (End)

Crossrefs

Cf. A008336, A337486.

Sequence in context: A028689 A156269 A370974 * A343506 A128447 A032622

Adjacent sequences: A370965 A370966 A370967 * A370969 A370970 A370971

Keyword

nonn

Author

N. J. A. Sloane, Apr 11 2024

Status

approved