A351685 a(n) is the row of the Trithoff (tribonacci) array that contains the tails of the sequence which is n times the tribonacci numbers.

1, 7, 10, 81, 101, 121, 141, 161, 1126, 1251, 1376, 1501, 1626, 1751, 1876, 2001, 2126, 2251, 2376, 2501, 2626, 17117, 17895, 18673, 19451, 20229, 21007, 21785, 22563, 23341, 24119, 24897, 25675, 26453, 27231, 28009, 28787, 29565, 30343, 31121, 31899, 32677, 33455

Offset

1,2

Comments

This sequence is increasing.

The first term of the row a(n) in the Trithoff array is sequence A351689.

Links

Table of n, a(n) for n=1..43.

Example

Consider twice the Tribonacci numbers: 0, 0, 2, 2, 4, 8, 14, 26, 48, and so on. The first few terms can be found in the first row of the Trithoff array A136175. The tail starting with 14, 26, and 48 is the seventh row of the Trithoff array. Thus, a(2) = 7.

Crossrefs

Cf. A000073, A136175, A351689.

.

Sequence in context: A115904 A136865 A350533 * A123797 A123805 A124200

Adjacent sequences: A351682 A351683 A351684 * A351686 A351687 A351688

Keyword

nonn

Author

Tanya Khovanova and PRIMES STEP Senior group, May 08 2022

Status

approved