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

Author

Tanya Khovanova and PRIMES STEP Senior group, May 08 2022

Keywords

• nonn

Comments

This sequence is increasing.

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

Examples

			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.