A143308 Triangle read by rows, A127446 * A000012, 1<=k<=n.

1, 4, 2, 6, 3, 3, 12, 8, 4, 4, 10, 5, 5, 5, 5, 24, 18, 12, 6, 6, 6, 14, 7, 7, 7, 7, 7, 7, 32, 24, 16, 16, 8, 8, 8, 8, 27, 18, 18, 9, 9, 9, 9, 9, 9, 40, 30, 20, 20, 20, 10, 10, 10, 10, 10, 22, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 72, 60, 48, 36, 24, 24, 12, 12, 12, 12, 12, 12

Offset

1,2

Comments

Given triangle A127446, partial sums of terms starting from the right.

Row sums give A064987.

Left column is A038040.

Links

Table of n, a(n) for n=1..78.

Example

First few rows of the triangle =
   1;
   4,  2;
   6,  3,  3;
  12,  8,  4,  4;
  10,  5,  5,  5,  5;
  24, 18, 12,  6,  6,  6;
  14,  7,  7,  7,  7,  7,  7;
Row 4 = (12, 8, 4, 4) since row 4 of triangle A127446 = (4, 4, 0, 4).

Crossrefs

Cf. A038040, A064987, A127446.

Sequence in context: A244997 A274516 A202498 * A246879 A302794 A247361

Adjacent sequences: A143305 A143306 A143307 * A143309 A143310 A143311

Keyword

nonn,tabl,less

Author

Gary W. Adamson, Aug 06 2008

Extensions

a(56) corrected by Georg Fischer, Jul 04 2023

Status

approved