A014630 Distinct elements occurring in triangle of Eulerian numbers (unsorted).

1, 4, 11, 26, 66, 57, 302, 120, 1191, 2416, 247, 4293, 15619, 502, 14608, 88234, 156190, 1013, 47840, 455192, 1310354, 2036, 152637, 2203488, 9738114, 15724248, 4083, 478271, 10187685, 66318474, 162512286, 8178, 1479726, 45533450, 423281535, 1505621508, 2275172004

Offset

1,2

Comments

It appears that no term other than 1 appears on different rows of A008292. If so, row n contains floor((n-1)/2) terms for n >= 2. - Pontus von Brömssen, Jul 20 2024

Links

Table of n, a(n) for n=1..37.

Example

As an irregular triangle:
   n\k|     1       2         3          4           5           6
  ----+-----------------------------------------------------------
   1  |     1
   2  |     (no terms)
   3  |     4
   4  |    11
   5  |    26      66
   6  |    57     302
   7  |   120    1191      2416
   8  |   247    4293     15619
   9  |   502   14608     88234     156190
  10  |  1013   47840    455192    1310354
  11  |  2036  152637   2203488    9738114    15724248
  12  |  4083  478271  10187685   66318474   162512286
  13  |  8178 1479726  45533450  423281535  1505621508  2275172004
  14  | 16369 4537314 198410786 2571742175 12843262863 27971176092

Crossrefs

Cf. A008292, A030196.

Sequence in context: A340567 A268775 A294840 * A192965 A305119 A035593

Adjacent sequences: A014627 A014628 A014629 * A014631 A014632 A014633

Keyword

nonn,tabf,easy

Author

Mohammad K. Azarian

Extensions

More terms from James A. Sellers

Status

approved